<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with Wdesk from Workiva-->
<!--Copyright 2021 Workiva-->
<!--r:21e94951-bd84-4a84-9b44-06b1b7f101a7,g:e9462482-b369-4e16-bb79-95fc7aa3b234-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/ConsolidatedStatementsofStockholdersEquity" xlink:type="simple" xlink:href="amat-20211031.xsd#ConsolidatedStatementsofStockholdersEquity"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/ConsolidatedStatementsofStockholdersEquity" xlink:type="extended" id="id0f8eff1a47543c59fc6e68bfd5536ac_ConsolidatedStatementsofStockholdersEquity">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_c84879a8-8e85-43ae-ab8d-207755cba565" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_23a85a27-9dc8-43b6-ae75-ca6593eae90d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c84879a8-8e85-43ae-ab8d-207755cba565" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_23a85a27-9dc8-43b6-ae75-ca6593eae90d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesOutstanding_a2e03242-d662-4918-824d-21bafee02baa" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_23a85a27-9dc8-43b6-ae75-ca6593eae90d" xlink:to="loc_us-gaap_SharesOutstanding_a2e03242-d662-4918-824d-21bafee02baa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_b655dae8-77e9-4694-bf84-d51d633a5eaa" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_23a85a27-9dc8-43b6-ae75-ca6593eae90d" xlink:to="loc_us-gaap_StockholdersEquity_b655dae8-77e9-4694-bf84-d51d633a5eaa" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_131a1bdc-a328-4a72-b7e6-bbfc0ccc2366" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_23a85a27-9dc8-43b6-ae75-ca6593eae90d" xlink:to="loc_us-gaap_NetIncomeLoss_131a1bdc-a328-4a72-b7e6-bbfc0ccc2366" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_c717d11d-0111-4c02-86f7-a2c6410984c4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_23a85a27-9dc8-43b6-ae75-ca6593eae90d" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_c717d11d-0111-4c02-86f7-a2c6410984c4" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsCommonStockCash_109ebb34-02aa-4b97-8c19-0e76903ef330" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DividendsCommonStockCash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_23a85a27-9dc8-43b6-ae75-ca6593eae90d" xlink:to="loc_us-gaap_DividendsCommonStockCash_109ebb34-02aa-4b97-8c19-0e76903ef330" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_ad2bef1b-a90f-4e76-aeb0-a11437d8c0bd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_23a85a27-9dc8-43b6-ae75-ca6593eae90d" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_ad2bef1b-a90f-4e76-aeb0-a11437d8c0bd" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_d5c317fd-34ce-4368-a94c-7fd44d635dd8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_23a85a27-9dc8-43b6-ae75-ca6593eae90d" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_d5c317fd-34ce-4368-a94c-7fd44d635dd8" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_4aee5d7a-5c69-4e53-a3ae-1d4dfcf62aaa" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_23a85a27-9dc8-43b6-ae75-ca6593eae90d" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_4aee5d7a-5c69-4e53-a3ae-1d4dfcf62aaa" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockSharesAcquired_8206dd9e-618b-45c9-9bb3-203ee06a651f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TreasuryStockSharesAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_23a85a27-9dc8-43b6-ae75-ca6593eae90d" xlink:to="loc_us-gaap_TreasuryStockSharesAcquired_8206dd9e-618b-45c9-9bb3-203ee06a651f" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_113bed75-4576-4263-8417-b9999c0753e9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TreasuryStockValueAcquiredCostMethod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_23a85a27-9dc8-43b6-ae75-ca6593eae90d" xlink:to="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_113bed75-4576-4263-8417-b9999c0753e9" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesOutstanding_c14d8f8d-218b-4d00-9985-5b74a7a22a19" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_11ea5418-e83e-4f7b-89b6-3a35366798b4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_4a39aff6-d01b-44f4-8633-56189a5f9a3c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_c84879a8-8e85-43ae-ab8d-207755cba565" xlink:to="loc_us-gaap_StatementTable_4a39aff6-d01b-44f4-8633-56189a5f9a3c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_d2c40c2a-92bb-47a9-8c53-5c13775ff3a0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_4a39aff6-d01b-44f4-8633-56189a5f9a3c" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_d2c40c2a-92bb-47a9-8c53-5c13775ff3a0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_d2c40c2a-92bb-47a9-8c53-5c13775ff3a0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_d2c40c2a-92bb-47a9-8c53-5c13775ff3a0" xlink:to="loc_us-gaap_EquityComponentDomain_d2c40c2a-92bb-47a9-8c53-5c13775ff3a0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_62282a54-1607-4e1c-8755-213b0fe1c92a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_d2c40c2a-92bb-47a9-8c53-5c13775ff3a0" xlink:to="loc_us-gaap_EquityComponentDomain_62282a54-1607-4e1c-8755-213b0fe1c92a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_42ab0efa-b8d3-4986-aec4-a58c7e80c872" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_62282a54-1607-4e1c-8755-213b0fe1c92a" xlink:to="loc_us-gaap_CommonStockMember_42ab0efa-b8d3-4986-aec4-a58c7e80c872" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_f0515e38-4aaa-48db-853c-43f91d950ebd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_62282a54-1607-4e1c-8755-213b0fe1c92a" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_f0515e38-4aaa-48db-853c-43f91d950ebd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_87f7adfe-dcac-4949-978c-b930b04a9620" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_62282a54-1607-4e1c-8755-213b0fe1c92a" xlink:to="loc_us-gaap_RetainedEarningsMember_87f7adfe-dcac-4949-978c-b930b04a9620" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockMember_66e5f315-7da3-40be-a374-fe0c260eb466" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TreasuryStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_62282a54-1607-4e1c-8755-213b0fe1c92a" xlink:to="loc_us-gaap_TreasuryStockMember_66e5f315-7da3-40be-a374-fe0c260eb466" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_e62bc4e7-f25e-4e74-b89f-c4b2e9c03b1f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_62282a54-1607-4e1c-8755-213b0fe1c92a" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_e62bc4e7-f25e-4e74-b89f-c4b2e9c03b1f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_7a6ff5e7-d904-4636-900e-59c16aa67d95" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_4a39aff6-d01b-44f4-8633-56189a5f9a3c" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_7a6ff5e7-d904-4636-900e-59c16aa67d95" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_7a6ff5e7-d904-4636-900e-59c16aa67d95_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_7a6ff5e7-d904-4636-900e-59c16aa67d95" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_7a6ff5e7-d904-4636-900e-59c16aa67d95_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_f73dff74-a182-4ea1-84b3-7894c4c5e6d8" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_7a6ff5e7-d904-4636-900e-59c16aa67d95" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_f73dff74-a182-4ea1-84b3-7894c4c5e6d8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_4354e385-2899-4bd2-8a11-fc8abad5cc39" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_f73dff74-a182-4ea1-84b3-7894c4c5e6d8" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_4354e385-2899-4bd2-8a11-fc8abad5cc39" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/ConsolidatedStatementsofStockholdersEquityParenthetical" xlink:type="simple" xlink:href="amat-20211031.xsd#ConsolidatedStatementsofStockholdersEquityParenthetical"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/ConsolidatedStatementsofStockholdersEquityParenthetical" xlink:type="extended" id="i4eb4be71272d484392b1f098a2223c65_ConsolidatedStatementsofStockholdersEquityParenthetical">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_82978145-c591-45c2-99c1-0d738b58381d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockDividendsPerShareDeclared_e00cd6ba-7004-4af6-a4fb-b6bde18ad585" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommonStockDividendsPerShareDeclared"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_82978145-c591-45c2-99c1-0d738b58381d" xlink:to="loc_us-gaap_CommonStockDividendsPerShareDeclared_e00cd6ba-7004-4af6-a4fb-b6bde18ad585" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_40e66b88-2dbd-4efc-83ec-19c0677c617f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_82978145-c591-45c2-99c1-0d738b58381d" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_40e66b88-2dbd-4efc-83ec-19c0677c617f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_f8a88022-ea4f-4f2c-be03-af819744a386" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_82978145-c591-45c2-99c1-0d738b58381d" xlink:to="loc_us-gaap_StatementTable_f8a88022-ea4f-4f2c-be03-af819744a386" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_4d026b9d-53d7-4159-893a-2fd3fe3d3484" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_f8a88022-ea4f-4f2c-be03-af819744a386" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_4d026b9d-53d7-4159-893a-2fd3fe3d3484" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_4d026b9d-53d7-4159-893a-2fd3fe3d3484_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_4d026b9d-53d7-4159-893a-2fd3fe3d3484" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_4d026b9d-53d7-4159-893a-2fd3fe3d3484_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_1376d6ee-e52e-43e1-a458-a3745bcf5c70" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_4d026b9d-53d7-4159-893a-2fd3fe3d3484" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_1376d6ee-e52e-43e1-a458-a3745bcf5c70" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_0c57455b-01dd-4ab3-9a9a-150dda6870a4" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_1376d6ee-e52e-43e1-a458-a3745bcf5c70" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_0c57455b-01dd-4ab3-9a9a-150dda6870a4" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/SummaryofSignificantAccountingPoliciesPropertyPlantandEquipmentUsefulLifeDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#SummaryofSignificantAccountingPoliciesPropertyPlantandEquipmentUsefulLifeDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/SummaryofSignificantAccountingPoliciesPropertyPlantandEquipmentUsefulLifeDetails" xlink:type="extended" id="i343f28bcad46405ebe51d1ceed6c0818_SummaryofSignificantAccountingPoliciesPropertyPlantandEquipmentUsefulLifeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_1d541a8a-52db-42ff-b403-6813578f5777" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_c1b1327a-ff8e-477a-954e-0963e8fcb7aa" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLife"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_1d541a8a-52db-42ff-b403-6813578f5777" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_c1b1327a-ff8e-477a-954e-0963e8fcb7aa" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_TermOfAmortization_09ab8a7d-f53d-488e-ad3b-994d3d7ed09b" xlink:href="amat-20211031.xsd#amat_TermOfAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_1d541a8a-52db-42ff-b403-6813578f5777" xlink:to="loc_amat_TermOfAmortization_09ab8a7d-f53d-488e-ad3b-994d3d7ed09b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_f378de5a-3a96-4f9d-b79a-aee9d8421343" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_1d541a8a-52db-42ff-b403-6813578f5777" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_f378de5a-3a96-4f9d-b79a-aee9d8421343" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_884e6627-da70-4512-beef-c83b979d5b35" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_f378de5a-3a96-4f9d-b79a-aee9d8421343" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_884e6627-da70-4512-beef-c83b979d5b35" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_884e6627-da70-4512-beef-c83b979d5b35_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_884e6627-da70-4512-beef-c83b979d5b35" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_884e6627-da70-4512-beef-c83b979d5b35_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_4212c070-58bb-4f8c-beab-2af6c34bc34e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_884e6627-da70-4512-beef-c83b979d5b35" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_4212c070-58bb-4f8c-beab-2af6c34bc34e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BuildingAndBuildingImprovementsMember_412c7a41-552f-4919-a8e9-97d5cc2b1331" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BuildingAndBuildingImprovementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_4212c070-58bb-4f8c-beab-2af6c34bc34e" xlink:to="loc_us-gaap_BuildingAndBuildingImprovementsMember_412c7a41-552f-4919-a8e9-97d5cc2b1331" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquipmentMember_d9fb13a8-81c3-4542-b655-bdb69474a8da" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquipmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_4212c070-58bb-4f8c-beab-2af6c34bc34e" xlink:to="loc_us-gaap_EquipmentMember_d9fb13a8-81c3-4542-b655-bdb69474a8da" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SoftwareAndSoftwareDevelopmentCostsMember_d2ece956-54ed-4516-beda-96b0dda2d53c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SoftwareAndSoftwareDevelopmentCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_4212c070-58bb-4f8c-beab-2af6c34bc34e" xlink:to="loc_us-gaap_SoftwareAndSoftwareDevelopmentCostsMember_d2ece956-54ed-4516-beda-96b0dda2d53c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FurnitureAndFixturesMember_3fd639ae-8911-4340-9449-67498a14d7f8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FurnitureAndFixturesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_4212c070-58bb-4f8c-beab-2af6c34bc34e" xlink:to="loc_us-gaap_FurnitureAndFixturesMember_3fd639ae-8911-4340-9449-67498a14d7f8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LandImprovementsMember_2e1710ec-0250-4c0f-8020-d20fb5ba0c82" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LandImprovementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_4212c070-58bb-4f8c-beab-2af6c34bc34e" xlink:to="loc_us-gaap_LandImprovementsMember_2e1710ec-0250-4c0f-8020-d20fb5ba0c82" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseholdImprovementsMember_19baf059-9f96-44f6-af44-4ee77fd4fbb4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LeaseholdImprovementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_4212c070-58bb-4f8c-beab-2af6c34bc34e" xlink:to="loc_us-gaap_LeaseholdImprovementsMember_19baf059-9f96-44f6-af44-4ee77fd4fbb4" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_c3b0ceac-effe-4995-b62d-d4d125a8cd49" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_f378de5a-3a96-4f9d-b79a-aee9d8421343" xlink:to="loc_srt_RangeAxis_c3b0ceac-effe-4995-b62d-d4d125a8cd49" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_c3b0ceac-effe-4995-b62d-d4d125a8cd49_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_c3b0ceac-effe-4995-b62d-d4d125a8cd49" xlink:to="loc_srt_RangeMember_c3b0ceac-effe-4995-b62d-d4d125a8cd49_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_6326bf35-58ec-478c-9275-27c04e95f7b9" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_c3b0ceac-effe-4995-b62d-d4d125a8cd49" xlink:to="loc_srt_RangeMember_6326bf35-58ec-478c-9275-27c04e95f7b9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_91d034f3-7f5c-4fe7-b869-059014b6751e" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_6326bf35-58ec-478c-9275-27c04e95f7b9" xlink:to="loc_srt_MinimumMember_91d034f3-7f5c-4fe7-b869-059014b6751e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_ae1ddcae-ee36-47db-8cdc-e01ee21d47fa" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_6326bf35-58ec-478c-9275-27c04e95f7b9" xlink:to="loc_srt_MaximumMember_ae1ddcae-ee36-47db-8cdc-e01ee21d47fa" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/SummaryofSignificantAccountingPoliciesIntangibleAssetsDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#SummaryofSignificantAccountingPoliciesIntangibleAssetsDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/SummaryofSignificantAccountingPoliciesIntangibleAssetsDetails" xlink:type="extended" id="iae420f8d1d5c4edaa3c2a66b248d0e37_SummaryofSignificantAccountingPoliciesIntangibleAssetsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_11866ad0-da55-408c-83cc-621ea083f518" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_d5c47203-1793-4edc-8ce8-d93d73bd5643" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetUsefulLife"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_11866ad0-da55-408c-83cc-621ea083f518" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_d5c47203-1793-4edc-8ce8-d93d73bd5643" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_802605e5-113d-4c85-aaa2-ef73a27946fb" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_11866ad0-da55-408c-83cc-621ea083f518" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_802605e5-113d-4c85-aaa2-ef73a27946fb" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_4a2d14cd-93b8-4240-b8da-1642a17e5dc1" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_802605e5-113d-4c85-aaa2-ef73a27946fb" xlink:to="loc_srt_RangeAxis_4a2d14cd-93b8-4240-b8da-1642a17e5dc1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_4a2d14cd-93b8-4240-b8da-1642a17e5dc1_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_4a2d14cd-93b8-4240-b8da-1642a17e5dc1" xlink:to="loc_srt_RangeMember_4a2d14cd-93b8-4240-b8da-1642a17e5dc1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_927ad322-3199-4d46-9016-846c286f09ff" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_4a2d14cd-93b8-4240-b8da-1642a17e5dc1" xlink:to="loc_srt_RangeMember_927ad322-3199-4d46-9016-846c286f09ff" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_9a31d603-710b-4178-a58c-e6c49d65f6cd" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_927ad322-3199-4d46-9016-846c286f09ff" xlink:to="loc_srt_MinimumMember_9a31d603-710b-4178-a58c-e6c49d65f6cd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_d191c8a5-a25e-495b-83b3-b2f9c4aca059" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_927ad322-3199-4d46-9016-846c286f09ff" xlink:to="loc_srt_MaximumMember_d191c8a5-a25e-495b-83b3-b2f9c4aca059" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/SummaryofSignificantAccountingPoliciesRecentAccountingPronouncementsDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#SummaryofSignificantAccountingPoliciesRecentAccountingPronouncementsDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/SummaryofSignificantAccountingPoliciesRecentAccountingPronouncementsDetails" xlink:type="extended" id="i3d2d2db959764c568bcc1776894ddcdb_SummaryofSignificantAccountingPoliciesRecentAccountingPronouncementsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_93d66e47-c341-4ea9-acae-4290d192bdb4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_56bdded8-6da1-4d45-9a18-dc4cc934e850" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_93d66e47-c341-4ea9-acae-4290d192bdb4" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_56bdded8-6da1-4d45-9a18-dc4cc934e850" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredRentReceivablesNet_61589d03-0367-4ae0-88df-a9c39ee8ff67" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredRentReceivablesNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_93d66e47-c341-4ea9-acae-4290d192bdb4" xlink:to="loc_us-gaap_DeferredRentReceivablesNet_61589d03-0367-4ae0-88df-a9c39ee8ff67" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_472960fa-8c8e-4dfc-be5a-f74f63ef10d4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_93d66e47-c341-4ea9-acae-4290d192bdb4" xlink:to="loc_us-gaap_OperatingLeaseLiability_472960fa-8c8e-4dfc-be5a-f74f63ef10d4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_359621d8-2ffa-4802-9053-39c261b8cb59" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_93d66e47-c341-4ea9-acae-4290d192bdb4" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_359621d8-2ffa-4802-9053-39c261b8cb59" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RestatementAxis_f07437e2-2646-4f4c-b77f-a7556d09a532" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RestatementAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_359621d8-2ffa-4802-9053-39c261b8cb59" xlink:to="loc_srt_RestatementAxis_f07437e2-2646-4f4c-b77f-a7556d09a532" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RestatementDomain_f07437e2-2646-4f4c-b77f-a7556d09a532_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RestatementDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RestatementAxis_f07437e2-2646-4f4c-b77f-a7556d09a532" xlink:to="loc_srt_RestatementDomain_f07437e2-2646-4f4c-b77f-a7556d09a532_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RestatementDomain_80af973c-2e53-4f55-835b-28d430fad64b" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RestatementDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RestatementAxis_f07437e2-2646-4f4c-b77f-a7556d09a532" xlink:to="loc_srt_RestatementDomain_80af973c-2e53-4f55-835b-28d430fad64b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RevisionOfPriorPeriodAccountingStandardsUpdateAdjustmentMember_7402487f-a9de-4c30-a9f2-5792da604b66" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RevisionOfPriorPeriodAccountingStandardsUpdateAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RestatementDomain_80af973c-2e53-4f55-835b-28d430fad64b" xlink:to="loc_srt_RevisionOfPriorPeriodAccountingStandardsUpdateAdjustmentMember_7402487f-a9de-4c30-a9f2-5792da604b66" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/CashCashEquivalentsandInvestmentsSummaryofCashCashEquivalentsandInvestmentsDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#CashCashEquivalentsandInvestmentsSummaryofCashCashEquivalentsandInvestmentsDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/CashCashEquivalentsandInvestmentsSummaryofCashCashEquivalentsandInvestmentsDetails" xlink:type="extended" id="i903c6193eaec43d3bced636179eb4963_CashCashEquivalentsandInvestmentsSummaryofCashCashEquivalentsandInvestmentsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_amat_ScheduleofCashCashEquivalentsandInvestmentsLineItems_08e20d90-49bb-4fbb-a53b-2eb16451f4f0" xlink:href="amat-20211031.xsd#amat_ScheduleofCashCashEquivalentsandInvestmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsAndCashAbstract_507c259a-e4db-4f27-b59a-0a06c11295bf" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InvestmentsAndCashAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_amat_ScheduleofCashCashEquivalentsandInvestmentsLineItems_08e20d90-49bb-4fbb-a53b-2eb16451f4f0" xlink:to="loc_us-gaap_InvestmentsAndCashAbstract_507c259a-e4db-4f27-b59a-0a06c11295bf" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Cash_c86f2346-92c8-4bc5-9695-d4dd253e6715" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Cash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentsAndCashAbstract_507c259a-e4db-4f27-b59a-0a06c11295bf" xlink:to="loc_us-gaap_Cash_c86f2346-92c8-4bc5-9695-d4dd253e6715" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashEquivalentsAtCarryingValue_a043d124-26aa-459c-a9d3-73b6bc9b3523" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentsAndCashAbstract_507c259a-e4db-4f27-b59a-0a06c11295bf" xlink:to="loc_us-gaap_CashEquivalentsAtCarryingValue_a043d124-26aa-459c-a9d3-73b6bc9b3523" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_cedde10b-d248-4227-93ee-bbc17ba46684" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentsAndCashAbstract_507c259a-e4db-4f27-b59a-0a06c11295bf" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_cedde10b-d248-4227-93ee-bbc17ba46684" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_610ff45d-ae29-409a-b8e4-62d3bc651998" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentsAndCashAbstract_507c259a-e4db-4f27-b59a-0a06c11295bf" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_610ff45d-ae29-409a-b8e4-62d3bc651998" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_13cc37b8-fbed-4989-aa8a-3fbddda2ad83" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentsAndCashAbstract_507c259a-e4db-4f27-b59a-0a06c11295bf" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_13cc37b8-fbed-4989-aa8a-3fbddda2ad83" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_fefdbb69-b197-46d7-a0f5-6b90ae9d4160" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentsAndCashAbstract_507c259a-e4db-4f27-b59a-0a06c11295bf" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_fefdbb69-b197-46d7-a0f5-6b90ae9d4160" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_9e9eb118-956b-4d59-90d2-ce0561c7e6fc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentsAndCashAbstract_507c259a-e4db-4f27-b59a-0a06c11295bf" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_9e9eb118-956b-4d59-90d2-ce0561c7e6fc" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNiCost_b3aeb9dc-8ae2-4934-9642-a064bcab73c9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquitySecuritiesFvNiCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentsAndCashAbstract_507c259a-e4db-4f27-b59a-0a06c11295bf" xlink:to="loc_us-gaap_EquitySecuritiesFvNiCost_b3aeb9dc-8ae2-4934-9642-a064bcab73c9" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_EquitySecuritiesFVNIAccumulatedUnrealizedGain_a6be1844-7a30-46b3-b52b-ab02deb23319" xlink:href="amat-20211031.xsd#amat_EquitySecuritiesFVNIAccumulatedUnrealizedGain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentsAndCashAbstract_507c259a-e4db-4f27-b59a-0a06c11295bf" xlink:to="loc_amat_EquitySecuritiesFVNIAccumulatedUnrealizedGain_a6be1844-7a30-46b3-b52b-ab02deb23319" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_EquitySecuritiesFVNIAccumulatedUnrealizedLoss_849d25cf-60b4-4f58-8d00-35dfcf49be90" xlink:href="amat-20211031.xsd#amat_EquitySecuritiesFVNIAccumulatedUnrealizedLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentsAndCashAbstract_507c259a-e4db-4f27-b59a-0a06c11295bf" xlink:to="loc_amat_EquitySecuritiesFVNIAccumulatedUnrealizedLoss_849d25cf-60b4-4f58-8d00-35dfcf49be90" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNi_a53735b6-501e-4298-b3d2-c6f880e02f3f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquitySecuritiesFvNi"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentsAndCashAbstract_507c259a-e4db-4f27-b59a-0a06c11295bf" xlink:to="loc_us-gaap_EquitySecuritiesFvNi_a53735b6-501e-4298-b3d2-c6f880e02f3f" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesTradingAndEquitySecuritiesFvNiCost_0498b327-ba08-45d0-abad-e911dbf24adf" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtSecuritiesTradingAndEquitySecuritiesFvNiCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentsAndCashAbstract_507c259a-e4db-4f27-b59a-0a06c11295bf" xlink:to="loc_us-gaap_DebtSecuritiesTradingAndEquitySecuritiesFvNiCost_0498b327-ba08-45d0-abad-e911dbf24adf" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_DebtSecuritiesAvailableForSaleAndEquitySecuritiesFVNIAccumulatedGrossUnrealizedGain_6639786e-9aee-447e-9e33-1755e31927fe" xlink:href="amat-20211031.xsd#amat_DebtSecuritiesAvailableForSaleAndEquitySecuritiesFVNIAccumulatedGrossUnrealizedGain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentsAndCashAbstract_507c259a-e4db-4f27-b59a-0a06c11295bf" xlink:to="loc_amat_DebtSecuritiesAvailableForSaleAndEquitySecuritiesFVNIAccumulatedGrossUnrealizedGain_6639786e-9aee-447e-9e33-1755e31927fe" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_DebtSecuritiesAvailableForSaleAndEquitySecuritiesFVNIAccumulatedUnrealizedLoss_36834f86-5aa0-47ff-aa76-0f9e22778d28" xlink:href="amat-20211031.xsd#amat_DebtSecuritiesAvailableForSaleAndEquitySecuritiesFVNIAccumulatedUnrealizedLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentsAndCashAbstract_507c259a-e4db-4f27-b59a-0a06c11295bf" xlink:to="loc_amat_DebtSecuritiesAvailableForSaleAndEquitySecuritiesFVNIAccumulatedUnrealizedLoss_36834f86-5aa0-47ff-aa76-0f9e22778d28" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TradingSecurities_74392146-dbb5-4328-bbd7-f8743f4206ab" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TradingSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentsAndCashAbstract_507c259a-e4db-4f27-b59a-0a06c11295bf" xlink:to="loc_us-gaap_TradingSecurities_74392146-dbb5-4328-bbd7-f8743f4206ab" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_CashCashEquivalentsAndInvestmentsCost_41af482e-f2f7-4724-9ca2-d296e8377391" xlink:href="amat-20211031.xsd#amat_CashCashEquivalentsAndInvestmentsCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentsAndCashAbstract_507c259a-e4db-4f27-b59a-0a06c11295bf" xlink:to="loc_amat_CashCashEquivalentsAndInvestmentsCost_41af482e-f2f7-4724-9ca2-d296e8377391" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_CashCashEquivalentsAndInvestmentsAccumulatedGrossUnrealizedGainbeforeTax_54fc4059-32a2-4062-8330-d05cde16c30c" xlink:href="amat-20211031.xsd#amat_CashCashEquivalentsAndInvestmentsAccumulatedGrossUnrealizedGainbeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentsAndCashAbstract_507c259a-e4db-4f27-b59a-0a06c11295bf" xlink:to="loc_amat_CashCashEquivalentsAndInvestmentsAccumulatedGrossUnrealizedGainbeforeTax_54fc4059-32a2-4062-8330-d05cde16c30c" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_CashCashEquivalentsAndInvestmentsAccumulatedGrossUnrealizedLossbeforeTax_6c0c030f-9cb3-434b-ba72-4c9f03391e7c" xlink:href="amat-20211031.xsd#amat_CashCashEquivalentsAndInvestmentsAccumulatedGrossUnrealizedLossbeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentsAndCashAbstract_507c259a-e4db-4f27-b59a-0a06c11295bf" xlink:to="loc_amat_CashCashEquivalentsAndInvestmentsAccumulatedGrossUnrealizedLossbeforeTax_6c0c030f-9cb3-434b-ba72-4c9f03391e7c" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_CashCashEquivalentsAndInvestmentsEstimatedFairValue_67d7a442-39b4-46e0-a7d4-9fc13231dc2b" xlink:href="amat-20211031.xsd#amat_CashCashEquivalentsAndInvestmentsEstimatedFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentsAndCashAbstract_507c259a-e4db-4f27-b59a-0a06c11295bf" xlink:to="loc_amat_CashCashEquivalentsAndInvestmentsEstimatedFairValue_67d7a442-39b4-46e0-a7d4-9fc13231dc2b" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_ScheduleofCashCashEquivalentsandInvestmentsTable_1b4d1589-4c28-4e8e-b4a8-7d13a8708cf8" xlink:href="amat-20211031.xsd#amat_ScheduleofCashCashEquivalentsandInvestmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_amat_ScheduleofCashCashEquivalentsandInvestmentsLineItems_08e20d90-49bb-4fbb-a53b-2eb16451f4f0" xlink:to="loc_amat_ScheduleofCashCashEquivalentsandInvestmentsTable_1b4d1589-4c28-4e8e-b4a8-7d13a8708cf8" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAxis_554635c0-c71e-49a2-b8ab-c60a7b39b92f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashAndCashEquivalentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_amat_ScheduleofCashCashEquivalentsandInvestmentsTable_1b4d1589-4c28-4e8e-b4a8-7d13a8708cf8" xlink:to="loc_us-gaap_CashAndCashEquivalentsAxis_554635c0-c71e-49a2-b8ab-c60a7b39b92f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_554635c0-c71e-49a2-b8ab-c60a7b39b92f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CashAndCashEquivalentsAxis_554635c0-c71e-49a2-b8ab-c60a7b39b92f" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_554635c0-c71e-49a2-b8ab-c60a7b39b92f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_da483715-48d8-46dd-a23d-3c2c14af052a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CashAndCashEquivalentsAxis_554635c0-c71e-49a2-b8ab-c60a7b39b92f" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_da483715-48d8-46dd-a23d-3c2c14af052a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MoneyMarketFundsMember_df4a6b6b-ea8c-4e41-9bb3-2d02dd46a17c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_MoneyMarketFundsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_da483715-48d8-46dd-a23d-3c2c14af052a" xlink:to="loc_us-gaap_MoneyMarketFundsMember_df4a6b6b-ea8c-4e41-9bb3-2d02dd46a17c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MunicipalNotesMember_6f134938-2f0a-4e28-9557-f5072f6933a0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_MunicipalNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_da483715-48d8-46dd-a23d-3c2c14af052a" xlink:to="loc_us-gaap_MunicipalNotesMember_6f134938-2f0a-4e28-9557-f5072f6933a0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_CommercialPaperCorporateBondsAndMediumTermNotesMember_36566e8d-eed3-4935-9aea-ab3d6118b96b" xlink:href="amat-20211031.xsd#amat_CommercialPaperCorporateBondsAndMediumTermNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_da483715-48d8-46dd-a23d-3c2c14af052a" xlink:to="loc_amat_CommercialPaperCorporateBondsAndMediumTermNotesMember_36566e8d-eed3-4935-9aea-ab3d6118b96b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_2cf93c4c-3477-40bd-a9a4-72d74b3a0dc0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_amat_ScheduleofCashCashEquivalentsandInvestmentsTable_1b4d1589-4c28-4e8e-b4a8-7d13a8708cf8" xlink:to="loc_us-gaap_FinancialInstrumentAxis_2cf93c4c-3477-40bd-a9a4-72d74b3a0dc0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_2cf93c4c-3477-40bd-a9a4-72d74b3a0dc0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_2cf93c4c-3477-40bd-a9a4-72d74b3a0dc0" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_2cf93c4c-3477-40bd-a9a4-72d74b3a0dc0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_d2454d67-cd5c-426e-a91c-fb0a63693a94" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_2cf93c4c-3477-40bd-a9a4-72d74b3a0dc0" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_d2454d67-cd5c-426e-a91c-fb0a63693a94" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FixedIncomeSecuritiesMember_1039ba3a-3743-4dc3-91f2-7799ea5949c9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FixedIncomeSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_d2454d67-cd5c-426e-a91c-fb0a63693a94" xlink:to="loc_us-gaap_FixedIncomeSecuritiesMember_1039ba3a-3743-4dc3-91f2-7799ea5949c9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USTreasuryAndGovernmentMember_920ec7dd-d410-4082-8178-de7a5fd80967" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_USTreasuryAndGovernmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FixedIncomeSecuritiesMember_1039ba3a-3743-4dc3-91f2-7799ea5949c9" xlink:to="loc_us-gaap_USTreasuryAndGovernmentMember_920ec7dd-d410-4082-8178-de7a5fd80967" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_ca0168d5-29c8-4564-808b-be9ca90fe578" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ForeignGovernmentDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FixedIncomeSecuritiesMember_1039ba3a-3743-4dc3-91f2-7799ea5949c9" xlink:to="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_ca0168d5-29c8-4564-808b-be9ca90fe578" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_2337062f-b1db-4fa9-a948-62f0687b5f2a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_USStatesAndPoliticalSubdivisionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FixedIncomeSecuritiesMember_1039ba3a-3743-4dc3-91f2-7799ea5949c9" xlink:to="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_2337062f-b1db-4fa9-a948-62f0687b5f2a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_CommercialPaperCorporateBondsAndMediumTermNotesMember_ac5421a6-1ed4-4e08-a63c-2f519ed346b2" xlink:href="amat-20211031.xsd#amat_CommercialPaperCorporateBondsAndMediumTermNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FixedIncomeSecuritiesMember_1039ba3a-3743-4dc3-91f2-7799ea5949c9" xlink:to="loc_amat_CommercialPaperCorporateBondsAndMediumTermNotesMember_ac5421a6-1ed4-4e08-a63c-2f519ed346b2" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetBackedSecuritiesMember_19c27e9e-e36d-41a8-95eb-f816b1016854" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AssetBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FixedIncomeSecuritiesMember_1039ba3a-3743-4dc3-91f2-7799ea5949c9" xlink:to="loc_us-gaap_AssetBackedSecuritiesMember_19c27e9e-e36d-41a8-95eb-f816b1016854" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_PubliclyTradedEquitySecuritiesMember_0a06e37b-3e00-4a17-aa5b-3e4c7025e8b8" xlink:href="amat-20211031.xsd#amat_PubliclyTradedEquitySecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_d2454d67-cd5c-426e-a91c-fb0a63693a94" xlink:to="loc_amat_PubliclyTradedEquitySecuritiesMember_0a06e37b-3e00-4a17-aa5b-3e4c7025e8b8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_EquityInvestmentsInPrivatelyHeldCompaniesMember_42eb6e16-1910-49b3-b977-49d6d7ca0837" xlink:href="amat-20211031.xsd#amat_EquityInvestmentsInPrivatelyHeldCompaniesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_d2454d67-cd5c-426e-a91c-fb0a63693a94" xlink:to="loc_amat_EquityInvestmentsInPrivatelyHeldCompaniesMember_42eb6e16-1910-49b3-b977-49d6d7ca0837" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/CashCashEquivalentsandInvestmentsNarrativeDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#CashCashEquivalentsandInvestmentsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/CashCashEquivalentsandInvestmentsNarrativeDetails" xlink:type="extended" id="ieea985bd6d9a469f9a5b09bf27423733_CashCashEquivalentsandInvestmentsNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryLineItems_94458abe-6f76-4c67-9fc9-aadfc91f200f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfInvestments_119042e1-6725-43f2-9515-56d9337d4b33" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ImpairmentOfInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryLineItems_94458abe-6f76-4c67-9fc9-aadfc91f200f" xlink:to="loc_us-gaap_ImpairmentOfInvestments_119042e1-6725-43f2-9515-56d9337d4b33" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryTable_27a7b9ce-e634-4b99-b471-29b30c37fe13" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryLineItems_94458abe-6f76-4c67-9fc9-aadfc91f200f" xlink:to="loc_us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryTable_27a7b9ce-e634-4b99-b471-29b30c37fe13" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeAxis_e8595cf2-8d5c-48ed-bb48-db27c9286b97" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InvestmentTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryTable_27a7b9ce-e634-4b99-b471-29b30c37fe13" xlink:to="loc_us-gaap_InvestmentTypeAxis_e8595cf2-8d5c-48ed-bb48-db27c9286b97" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeCategorizationMember_e8595cf2-8d5c-48ed-bb48-db27c9286b97_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InvestmentTypeCategorizationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_InvestmentTypeAxis_e8595cf2-8d5c-48ed-bb48-db27c9286b97" xlink:to="loc_us-gaap_InvestmentTypeCategorizationMember_e8595cf2-8d5c-48ed-bb48-db27c9286b97_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeCategorizationMember_5ead483c-80d6-4733-805d-380568e3cc6a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InvestmentTypeCategorizationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_InvestmentTypeAxis_e8595cf2-8d5c-48ed-bb48-db27c9286b97" xlink:to="loc_us-gaap_InvestmentTypeCategorizationMember_5ead483c-80d6-4733-805d-380568e3cc6a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FixedIncomeSecuritiesMember_fddd1bed-923a-49af-8353-db4da05a3e5c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FixedIncomeSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentTypeCategorizationMember_5ead483c-80d6-4733-805d-380568e3cc6a" xlink:to="loc_us-gaap_FixedIncomeSecuritiesMember_fddd1bed-923a-49af-8353-db4da05a3e5c" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/CashandCashEquivalentsGainLossonEquityInvestmentsDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#CashandCashEquivalentsGainLossonEquityInvestmentsDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/CashandCashEquivalentsGainLossonEquityInvestmentsDetails" xlink:type="extended" id="i5ca5f6f398ab4489882d3489e103a796_CashandCashEquivalentsGainLossonEquityInvestmentsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsLineItems_6621c23f-32be-40f6-a955-7013c2771070" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNiUnrealizedGain_cbac5d95-512b-40f7-989a-0fc9cb4a04f6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquitySecuritiesFvNiUnrealizedGain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsLineItems_6621c23f-32be-40f6-a955-7013c2771070" xlink:to="loc_us-gaap_EquitySecuritiesFvNiUnrealizedGain_cbac5d95-512b-40f7-989a-0fc9cb4a04f6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNiUnrealizedLoss_f18ea2df-ae33-4831-99af-9df379473fe9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquitySecuritiesFvNiUnrealizedLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsLineItems_6621c23f-32be-40f6-a955-7013c2771070" xlink:to="loc_us-gaap_EquitySecuritiesFvNiUnrealizedLoss_f18ea2df-ae33-4831-99af-9df379473fe9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNiRealizedGain_24f0cc13-7891-4aa3-9479-843be2d5a298" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquitySecuritiesFvNiRealizedGain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsLineItems_6621c23f-32be-40f6-a955-7013c2771070" xlink:to="loc_us-gaap_EquitySecuritiesFvNiRealizedGain_24f0cc13-7891-4aa3-9479-843be2d5a298" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNiRealizedLoss_36b2ab36-6937-41be-a95b-498ca3d40d47" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquitySecuritiesFvNiRealizedLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsLineItems_6621c23f-32be-40f6-a955-7013c2771070" xlink:to="loc_us-gaap_EquitySecuritiesFvNiRealizedLoss_36b2ab36-6937-41be-a95b-498ca3d40d47" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNiGainLoss_a51b48dc-e7bf-4da4-80d3-d12e077a2a96" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquitySecuritiesFvNiGainLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsLineItems_6621c23f-32be-40f6-a955-7013c2771070" xlink:to="loc_us-gaap_EquitySecuritiesFvNiGainLoss_a51b48dc-e7bf-4da4-80d3-d12e077a2a96" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsTable_55e29b96-cb64-49d9-8145-dc0e41d48e1f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsLineItems_6621c23f-32be-40f6-a955-7013c2771070" xlink:to="loc_us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsTable_55e29b96-cb64-49d9-8145-dc0e41d48e1f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeAxis_dec141d3-1843-4661-b995-340f447d90ed" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InvestmentTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsTable_55e29b96-cb64-49d9-8145-dc0e41d48e1f" xlink:to="loc_us-gaap_InvestmentTypeAxis_dec141d3-1843-4661-b995-340f447d90ed" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeCategorizationMember_dec141d3-1843-4661-b995-340f447d90ed_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InvestmentTypeCategorizationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_InvestmentTypeAxis_dec141d3-1843-4661-b995-340f447d90ed" xlink:to="loc_us-gaap_InvestmentTypeCategorizationMember_dec141d3-1843-4661-b995-340f447d90ed_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeCategorizationMember_aee76621-eac2-4364-8893-c9f915d87260" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InvestmentTypeCategorizationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_InvestmentTypeAxis_dec141d3-1843-4661-b995-340f447d90ed" xlink:to="loc_us-gaap_InvestmentTypeCategorizationMember_aee76621-eac2-4364-8893-c9f915d87260" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_PubliclyTradedEquitySecuritiesMember_4d69ede8-a6a0-4826-a64e-11f88188a86f" xlink:href="amat-20211031.xsd#amat_PubliclyTradedEquitySecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentTypeCategorizationMember_aee76621-eac2-4364-8893-c9f915d87260" xlink:to="loc_amat_PubliclyTradedEquitySecuritiesMember_4d69ede8-a6a0-4826-a64e-11f88188a86f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_EquityInvestmentsInPrivatelyHeldCompaniesMember_678846c7-bb94-416b-9ef0-029cbb106930" xlink:href="amat-20211031.xsd#amat_EquityInvestmentsInPrivatelyHeldCompaniesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentTypeCategorizationMember_aee76621-eac2-4364-8893-c9f915d87260" xlink:to="loc_amat_EquityInvestmentsInPrivatelyHeldCompaniesMember_678846c7-bb94-416b-9ef0-029cbb106930" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/FairValueMeasurementsNarrativeDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#FairValueMeasurementsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/FairValueMeasurementsNarrativeDetails" xlink:type="extended" id="i8ee00bd87811413d9f8185b44ffd8168_FairValueMeasurementsNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryLineItems_018dd182-a69b-4d23-be38-c006e9b576b7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_b6322ac4-ae3e-4930-8740-10f9e1bfa133" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryLineItems_018dd182-a69b-4d23-be38-c006e9b576b7" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_b6322ac4-ae3e-4930-8740-10f9e1bfa133" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtFairValue_41851d95-1e7d-4ad1-a18a-0eac4579063e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryLineItems_018dd182-a69b-4d23-be38-c006e9b576b7" xlink:to="loc_us-gaap_LongTermDebtFairValue_41851d95-1e7d-4ad1-a18a-0eac4579063e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryTable_67097703-a392-43ec-96fd-27dd9fd0dc1e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryLineItems_018dd182-a69b-4d23-be38-c006e9b576b7" xlink:to="loc_us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryTable_67097703-a392-43ec-96fd-27dd9fd0dc1e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_f2c50edf-7a48-4ae2-a313-71184943a9d7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueByMeasurementBasisAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryTable_67097703-a392-43ec-96fd-27dd9fd0dc1e" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_f2c50edf-7a48-4ae2-a313-71184943a9d7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_f2c50edf-7a48-4ae2-a313-71184943a9d7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_f2c50edf-7a48-4ae2-a313-71184943a9d7" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_f2c50edf-7a48-4ae2-a313-71184943a9d7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_e6111884-d3fc-40ae-bc3b-358e11138640" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_f2c50edf-7a48-4ae2-a313-71184943a9d7" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_e6111884-d3fc-40ae-bc3b-358e11138640" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_18da5b17-c347-485f-93c8-3d5b6cae8141" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_e6111884-d3fc-40ae-bc3b-358e11138640" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_18da5b17-c347-485f-93c8-3d5b6cae8141" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_12941727-1568-4113-9773-83f905f2834a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_e6111884-d3fc-40ae-bc3b-358e11138640" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_12941727-1568-4113-9773-83f905f2834a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_020cd596-c353-4bf1-89b9-daedbd771c97" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryTable_67097703-a392-43ec-96fd-27dd9fd0dc1e" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_020cd596-c353-4bf1-89b9-daedbd771c97" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_020cd596-c353-4bf1-89b9-daedbd771c97_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_020cd596-c353-4bf1-89b9-daedbd771c97" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_020cd596-c353-4bf1-89b9-daedbd771c97_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_77594824-4e43-4541-b7a5-b43d6a097630" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_020cd596-c353-4bf1-89b9-daedbd771c97" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_77594824-4e43-4541-b7a5-b43d6a097630" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_f8ee5cc9-b0f5-4dc0-be8d-5997b6bbde20" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_77594824-4e43-4541-b7a5-b43d6a097630" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_f8ee5cc9-b0f5-4dc0-be8d-5997b6bbde20" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_caa1b007-6baf-47da-9731-c0964554f385" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryTable_67097703-a392-43ec-96fd-27dd9fd0dc1e" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_caa1b007-6baf-47da-9731-c0964554f385" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_caa1b007-6baf-47da-9731-c0964554f385_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_caa1b007-6baf-47da-9731-c0964554f385" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_caa1b007-6baf-47da-9731-c0964554f385_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_a9f15624-b8bf-40bd-9852-51a3eaef9235" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_caa1b007-6baf-47da-9731-c0964554f385" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_a9f15624-b8bf-40bd-9852-51a3eaef9235" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_59870180-d91c-45e1-82d5-66beb85e19ef" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_a9f15624-b8bf-40bd-9852-51a3eaef9235" xlink:to="loc_us-gaap_SeniorNotesMember_59870180-d91c-45e1-82d5-66beb85e19ef" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/FairValueMeasurementsAssetsMeasuredatFairValueonaRecurringBasisDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#FairValueMeasurementsAssetsMeasuredatFairValueonaRecurringBasisDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/FairValueMeasurementsAssetsMeasuredatFairValueonaRecurringBasisDetails" xlink:type="extended" id="i57f1f925ca0f4253b7e983dee64b42b8_FairValueMeasurementsAssetsMeasuredatFairValueonaRecurringBasisDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9a172353-e544-4cce-8e72-444e6c15cb4b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosureAbstract_4fd9acfb-cfe1-4c2e-865b-4be624a09b35" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AssetsFairValueDisclosureAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9a172353-e544-4cce-8e72-444e6c15cb4b" xlink:to="loc_us-gaap_AssetsFairValueDisclosureAbstract_4fd9acfb-cfe1-4c2e-865b-4be624a09b35" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_ba600809-d8b6-4b44-a337-e88d9fbb99df" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_4fd9acfb-cfe1-4c2e-865b-4be624a09b35" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_ba600809-d8b6-4b44-a337-e88d9fbb99df" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermInvestmentsAbstract_eb612ce8-cfc6-442e-ab76-428945bd4825" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShortTermInvestmentsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9a172353-e544-4cce-8e72-444e6c15cb4b" xlink:to="loc_us-gaap_ShortTermInvestmentsAbstract_eb612ce8-cfc6-442e-ab76-428945bd4825" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNi_621b36f8-ecef-4a1c-a9cf-b67763168ad9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquitySecuritiesFvNi"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermInvestmentsAbstract_eb612ce8-cfc6-442e-ab76-428945bd4825" xlink:to="loc_us-gaap_EquitySecuritiesFvNi_621b36f8-ecef-4a1c-a9cf-b67763168ad9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_5797c49b-dc11-4542-b76f-90eb6b505ffd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AssetsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9a172353-e544-4cce-8e72-444e6c15cb4b" xlink:to="loc_us-gaap_AssetsFairValueDisclosure_5797c49b-dc11-4542-b76f-90eb6b505ffd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashEquivalents_e6416534-f65f-494f-a422-14bec55aff83" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RestrictedCashEquivalents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9a172353-e544-4cce-8e72-444e6c15cb4b" xlink:to="loc_us-gaap_RestrictedCashEquivalents_e6416534-f65f-494f-a422-14bec55aff83" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_42a83819-8907-4a1d-84cc-6540e7cc3e64" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9a172353-e544-4cce-8e72-444e6c15cb4b" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_42a83819-8907-4a1d-84cc-6540e7cc3e64" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_2728e643-c686-4f19-9dce-11785214043d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_42a83819-8907-4a1d-84cc-6540e7cc3e64" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_2728e643-c686-4f19-9dce-11785214043d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_2728e643-c686-4f19-9dce-11785214043d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_2728e643-c686-4f19-9dce-11785214043d" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_2728e643-c686-4f19-9dce-11785214043d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_c012f9f3-5bfc-4bff-881d-bf3ddbced6f1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_2728e643-c686-4f19-9dce-11785214043d" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_c012f9f3-5bfc-4bff-881d-bf3ddbced6f1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_0a010c8f-f5bb-48f2-83a8-46095f90e0d3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueMeasurementsRecurringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_c012f9f3-5bfc-4bff-881d-bf3ddbced6f1" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_0a010c8f-f5bb-48f2-83a8-46095f90e0d3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_2631d4de-c728-4268-a7e6-79224e829ff5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_42a83819-8907-4a1d-84cc-6540e7cc3e64" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_2631d4de-c728-4268-a7e6-79224e829ff5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_2631d4de-c728-4268-a7e6-79224e829ff5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_2631d4de-c728-4268-a7e6-79224e829ff5" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_2631d4de-c728-4268-a7e6-79224e829ff5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_b43ef5f5-e1cc-4c1b-834f-e8e60e4f0841" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_2631d4de-c728-4268-a7e6-79224e829ff5" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_b43ef5f5-e1cc-4c1b-834f-e8e60e4f0841" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_f218fb09-f927-4f57-a921-6afbbec47e63" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_b43ef5f5-e1cc-4c1b-834f-e8e60e4f0841" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_f218fb09-f927-4f57-a921-6afbbec47e63" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_cc8fe3f9-62b0-405a-a38e-02684118e636" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_b43ef5f5-e1cc-4c1b-834f-e8e60e4f0841" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_cc8fe3f9-62b0-405a-a38e-02684118e636" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_1ebe72b0-b0d0-4091-ae50-f5897e34052d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_42a83819-8907-4a1d-84cc-6540e7cc3e64" xlink:to="loc_us-gaap_FinancialInstrumentAxis_1ebe72b0-b0d0-4091-ae50-f5897e34052d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_1ebe72b0-b0d0-4091-ae50-f5897e34052d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_1ebe72b0-b0d0-4091-ae50-f5897e34052d" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_1ebe72b0-b0d0-4091-ae50-f5897e34052d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_89c9cabf-7ba8-4a43-9400-90bdc33bb669" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_1ebe72b0-b0d0-4091-ae50-f5897e34052d" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_89c9cabf-7ba8-4a43-9400-90bdc33bb669" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MoneyMarketFundsMember_9df5532c-b8cc-4d6e-a59a-c6075ff12fd8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_MoneyMarketFundsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_89c9cabf-7ba8-4a43-9400-90bdc33bb669" xlink:to="loc_us-gaap_MoneyMarketFundsMember_9df5532c-b8cc-4d6e-a59a-c6075ff12fd8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USTreasuryAndGovernmentMember_21a56322-8500-47d5-af5d-8d787a71aaf0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_USTreasuryAndGovernmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_89c9cabf-7ba8-4a43-9400-90bdc33bb669" xlink:to="loc_us-gaap_USTreasuryAndGovernmentMember_21a56322-8500-47d5-af5d-8d787a71aaf0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_4b1aa5fa-7bb0-4dc4-93ef-a7baba3f560a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ForeignGovernmentDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_89c9cabf-7ba8-4a43-9400-90bdc33bb669" xlink:to="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_4b1aa5fa-7bb0-4dc4-93ef-a7baba3f560a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_417d5560-a1c2-4848-b54d-7d2b2e913794" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_USStatesAndPoliticalSubdivisionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_89c9cabf-7ba8-4a43-9400-90bdc33bb669" xlink:to="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_417d5560-a1c2-4848-b54d-7d2b2e913794" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_CommercialPaperCorporateBondsAndMediumTermNotesMember_3bfb8949-f31e-4dcf-8b20-be144816e1ea" xlink:href="amat-20211031.xsd#amat_CommercialPaperCorporateBondsAndMediumTermNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_89c9cabf-7ba8-4a43-9400-90bdc33bb669" xlink:to="loc_amat_CommercialPaperCorporateBondsAndMediumTermNotesMember_3bfb8949-f31e-4dcf-8b20-be144816e1ea" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetBackedSecuritiesMember_8a9d8e3b-cda3-4b05-ab27-94914468ec55" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AssetBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_89c9cabf-7ba8-4a43-9400-90bdc33bb669" xlink:to="loc_us-gaap_AssetBackedSecuritiesMember_8a9d8e3b-cda3-4b05-ab27-94914468ec55" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_PubliclyTradedEquitySecuritiesMember_cf0ed614-e672-47be-987d-83a61ddf05ed" xlink:href="amat-20211031.xsd#amat_PubliclyTradedEquitySecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_89c9cabf-7ba8-4a43-9400-90bdc33bb669" xlink:to="loc_amat_PubliclyTradedEquitySecuritiesMember_cf0ed614-e672-47be-987d-83a61ddf05ed" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_5567e25e-65b5-4fae-b61f-4252c0f0b8d9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BalanceSheetLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_42a83819-8907-4a1d-84cc-6540e7cc3e64" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_5567e25e-65b5-4fae-b61f-4252c0f0b8d9" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_5567e25e-65b5-4fae-b61f-4252c0f0b8d9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BalanceSheetLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_5567e25e-65b5-4fae-b61f-4252c0f0b8d9" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_5567e25e-65b5-4fae-b61f-4252c0f0b8d9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_9a0ae997-b730-49be-9a6d-56ec85127d37" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BalanceSheetLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_5567e25e-65b5-4fae-b61f-4252c0f0b8d9" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_9a0ae997-b730-49be-9a6d-56ec85127d37" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_DeferredIncomeTaxesAndOtherAssetsNetMember_10ec2e54-04b2-4b9b-9d7c-ac5540ca408c" xlink:href="amat-20211031.xsd#amat_DeferredIncomeTaxesAndOtherAssetsNetMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_9a0ae997-b730-49be-9a6d-56ec85127d37" xlink:to="loc_amat_DeferredIncomeTaxesAndOtherAssetsNetMember_10ec2e54-04b2-4b9b-9d7c-ac5540ca408c" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/DerivativeInstrumentsandHedgingActivitiesNarrativeDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#DerivativeInstrumentsandHedgingActivitiesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/DerivativeInstrumentsandHedgingActivitiesNarrativeDetails" xlink:type="extended" id="iec34a85a7e7d4572a606e2b1eb1fca0d_DerivativeInstrumentsandHedgingActivitiesNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems_9b5ed2be-e637-441f-86ae-0c16ffbebbdd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MaximumLengthOfTimeForeignCurrencyCashFlowHedge_0255ca6a-a204-4932-97fa-a1c2b114e32e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_MaximumLengthOfTimeForeignCurrencyCashFlowHedge"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems_9b5ed2be-e637-441f-86ae-0c16ffbebbdd" xlink:to="loc_us-gaap_MaximumLengthOfTimeForeignCurrencyCashFlowHedge_0255ca6a-a204-4932-97fa-a1c2b114e32e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossReclassificationFromAccumulatedOCIToIncomeEstimateOfTimeToTransfer1_91ceaee0-e314-42e6-8a4a-7eea74a0e8d3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossReclassificationFromAccumulatedOCIToIncomeEstimateOfTimeToTransfer1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems_9b5ed2be-e637-441f-86ae-0c16ffbebbdd" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossReclassificationFromAccumulatedOCIToIncomeEstimateOfTimeToTransfer1_91ceaee0-e314-42e6-8a4a-7eea74a0e8d3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNotionalAmount_1ffe1729-8c25-44a4-92df-68ad40ef4fa0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeNotionalAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems_9b5ed2be-e637-441f-86ae-0c16ffbebbdd" xlink:to="loc_us-gaap_DerivativeNotionalAmount_1ffe1729-8c25-44a4-92df-68ad40ef4fa0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable_936aa1ec-dcca-4668-a494-09706875220a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems_9b5ed2be-e637-441f-86ae-0c16ffbebbdd" xlink:to="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable_936aa1ec-dcca-4668-a494-09706875220a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_3d0a44e6-b757-493f-94f2-2d59cd592b73" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable_936aa1ec-dcca-4668-a494-09706875220a" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_3d0a44e6-b757-493f-94f2-2d59cd592b73" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_3d0a44e6-b757-493f-94f2-2d59cd592b73_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_3d0a44e6-b757-493f-94f2-2d59cd592b73" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_3d0a44e6-b757-493f-94f2-2d59cd592b73_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_94c0fa78-c522-40ff-bb94-18402adc1830" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_3d0a44e6-b757-493f-94f2-2d59cd592b73" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_94c0fa78-c522-40ff-bb94-18402adc1830" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeContractMember_f88e5c4c-f020-4264-874c-07d32969b8b0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ForeignExchangeContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_94c0fa78-c522-40ff-bb94-18402adc1830" xlink:to="loc_us-gaap_ForeignExchangeContractMember_f88e5c4c-f020-4264-874c-07d32969b8b0" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/DerivativeInstrumentsandHedgingActivitiesGainLossonDerivativesinAOCIDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#DerivativeInstrumentsandHedgingActivitiesGainLossonDerivativesinAOCIDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/DerivativeInstrumentsandHedgingActivitiesGainLossonDerivativesinAOCIDetails" xlink:type="extended" id="if9d08aa4ad1247669b5842c7f8717a85_DerivativeInstrumentsandHedgingActivitiesGainLossonDerivativesinAOCIDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_15de3312-52cb-46d2-a3e8-37fe5fc19a27" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax_a23b4c91-0761-44e9-8e1a-30a3c4b42f8b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_15de3312-52cb-46d2-a3e8-37fe5fc19a27" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax_a23b4c91-0761-44e9-8e1a-30a3c4b42f8b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax_00962af8-991a-4a31-9e9f-9ae126b2e986" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_15de3312-52cb-46d2-a3e8-37fe5fc19a27" xlink:to="loc_us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax_00962af8-991a-4a31-9e9f-9ae126b2e986" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_ee4f8399-05eb-49a7-a474-8e2eab0cf94b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_15de3312-52cb-46d2-a3e8-37fe5fc19a27" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_ee4f8399-05eb-49a7-a474-8e2eab0cf94b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_e4d94795-f787-4774-8d49-bb9dd56088e0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_ee4f8399-05eb-49a7-a474-8e2eab0cf94b" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_e4d94795-f787-4774-8d49-bb9dd56088e0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_e4d94795-f787-4774-8d49-bb9dd56088e0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_e4d94795-f787-4774-8d49-bb9dd56088e0" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_e4d94795-f787-4774-8d49-bb9dd56088e0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_285ae176-49a3-4960-8029-9d814dc63dab" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_e4d94795-f787-4774-8d49-bb9dd56088e0" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_285ae176-49a3-4960-8029-9d814dc63dab" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeContractMember_025cdbf3-cd5e-4307-8713-85ffcd673224" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ForeignExchangeContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_285ae176-49a3-4960-8029-9d814dc63dab" xlink:to="loc_us-gaap_ForeignExchangeContractMember_025cdbf3-cd5e-4307-8713-85ffcd673224" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateContractMember_90b62b49-5c7e-40dd-9f97-02b5a8382749" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InterestRateContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_285ae176-49a3-4960-8029-9d814dc63dab" xlink:to="loc_us-gaap_InterestRateContractMember_90b62b49-5c7e-40dd-9f97-02b5a8382749" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_01bc0707-7051-4a62-8b56-2ffc3a25ef5a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_ee4f8399-05eb-49a7-a474-8e2eab0cf94b" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_01bc0707-7051-4a62-8b56-2ffc3a25ef5a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_01bc0707-7051-4a62-8b56-2ffc3a25ef5a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_01bc0707-7051-4a62-8b56-2ffc3a25ef5a" xlink:to="loc_us-gaap_HedgingRelationshipDomain_01bc0707-7051-4a62-8b56-2ffc3a25ef5a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_92595976-a811-4378-94c0-59be965d00a4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_01bc0707-7051-4a62-8b56-2ffc3a25ef5a" xlink:to="loc_us-gaap_HedgingRelationshipDomain_92595976-a811-4378-94c0-59be965d00a4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashFlowHedgingMember_b16338f9-a0fc-4f72-9f41-d61de520fd62" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashFlowHedgingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_92595976-a811-4378-94c0-59be965d00a4" xlink:to="loc_us-gaap_CashFlowHedgingMember_b16338f9-a0fc-4f72-9f41-d61de520fd62" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/DerivativeInstrumentsandHedgingActivitiesDerivativesinCashFlowHedgingRelationshipsDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#DerivativeInstrumentsandHedgingActivitiesDerivativesinCashFlowHedgingRelationshipsDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/DerivativeInstrumentsandHedgingActivitiesDerivativesinCashFlowHedgingRelationshipsDetails" xlink:type="extended" id="i4c59e44435b9483f8ee13964443ca942_DerivativeInstrumentsandHedgingActivitiesDerivativesinCashFlowHedgingRelationshipsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_438d71b4-bbe4-4c53-a507-3c12d414fa9e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_ee90155e-cb28-4e46-9f37-aa771ee17e82" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_438d71b4-bbe4-4c53-a507-3c12d414fa9e" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_ee90155e-cb28-4e46-9f37-aa771ee17e82" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_79ce5fc8-46a4-4cef-8a01-635e2932e10c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_438d71b4-bbe4-4c53-a507-3c12d414fa9e" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_79ce5fc8-46a4-4cef-8a01-635e2932e10c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpense_e8487275-0ca1-4dcd-9ce8-37b6dfca1e19" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ResearchAndDevelopmentExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_438d71b4-bbe4-4c53-a507-3c12d414fa9e" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpense_e8487275-0ca1-4dcd-9ce8-37b6dfca1e19" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpense_dee0f14b-eba6-4b3a-94f5-216328322812" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GeneralAndAdministrativeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_438d71b4-bbe4-4c53-a507-3c12d414fa9e" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpense_dee0f14b-eba6-4b3a-94f5-216328322812" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_91424b85-c244-4a76-8b9d-898455a9a3d1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_438d71b4-bbe4-4c53-a507-3c12d414fa9e" xlink:to="loc_us-gaap_InterestExpense_91424b85-c244-4a76-8b9d-898455a9a3d1" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax_2381815d-5a6d-4d77-8566-2ee5b4f16501" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_438d71b4-bbe4-4c53-a507-3c12d414fa9e" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax_2381815d-5a6d-4d77-8566-2ee5b4f16501" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseBeforeAdjustmentsAndTax_ef1a5f3f-3ed5-402e-a7fd-31565d59dc36" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseBeforeAdjustmentsAndTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_438d71b4-bbe4-4c53-a507-3c12d414fa9e" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseBeforeAdjustmentsAndTax_ef1a5f3f-3ed5-402e-a7fd-31565d59dc36" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet_6987da57-908b-4fe4-8cf4-3efca9b77fcd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_438d71b4-bbe4-4c53-a507-3c12d414fa9e" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet_6987da57-908b-4fe4-8cf4-3efca9b77fcd" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet_6272bf30-2714-45c1-99cb-4ec6937c2305" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_438d71b4-bbe4-4c53-a507-3c12d414fa9e" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet_6272bf30-2714-45c1-99cb-4ec6937c2305" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_4ae860ef-a0da-497e-ad69-0efca59168ce" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_438d71b4-bbe4-4c53-a507-3c12d414fa9e" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_4ae860ef-a0da-497e-ad69-0efca59168ce" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_ea305e4f-2693-41f6-be84-65324536a7f0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_4ae860ef-a0da-497e-ad69-0efca59168ce" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_ea305e4f-2693-41f6-be84-65324536a7f0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_ea305e4f-2693-41f6-be84-65324536a7f0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_ea305e4f-2693-41f6-be84-65324536a7f0" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_ea305e4f-2693-41f6-be84-65324536a7f0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_90d2fba9-b41f-43d3-8246-13b7763c31f7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_ea305e4f-2693-41f6-be84-65324536a7f0" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_90d2fba9-b41f-43d3-8246-13b7763c31f7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeContractMember_a5183b89-af06-4b83-b64d-61fb32a5a2a7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ForeignExchangeContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_90d2fba9-b41f-43d3-8246-13b7763c31f7" xlink:to="loc_us-gaap_ForeignExchangeContractMember_a5183b89-af06-4b83-b64d-61fb32a5a2a7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateContractMember_8455305f-dc3a-4623-aed6-056024c57bad" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InterestRateContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_90d2fba9-b41f-43d3-8246-13b7763c31f7" xlink:to="loc_us-gaap_InterestRateContractMember_8455305f-dc3a-4623-aed6-056024c57bad" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_db9341ac-73e0-472f-bd43-d4041a06d808" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeStatementLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_4ae860ef-a0da-497e-ad69-0efca59168ce" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_db9341ac-73e0-472f-bd43-d4041a06d808" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_db9341ac-73e0-472f-bd43-d4041a06d808_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_db9341ac-73e0-472f-bd43-d4041a06d808" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_db9341ac-73e0-472f-bd43-d4041a06d808_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_76c59411-4106-4351-b215-af96bd3083ec" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_db9341ac-73e0-472f-bd43-d4041a06d808" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_76c59411-4106-4351-b215-af96bd3083ec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SalesMember_660599da-73c4-4cc1-bc22-9d9a399f8c82" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SalesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_76c59411-4106-4351-b215-af96bd3083ec" xlink:to="loc_us-gaap_SalesMember_660599da-73c4-4cc1-bc22-9d9a399f8c82" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfSalesMember_344ec6f7-0a81-4867-9879-e65f6b3409af" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CostOfSalesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_76c59411-4106-4351-b215-af96bd3083ec" xlink:to="loc_us-gaap_CostOfSalesMember_344ec6f7-0a81-4867-9879-e65f6b3409af" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpenseMember_0179cfbe-4dd4-461a-9b5e-fa5e15eeffe6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ResearchAndDevelopmentExpenseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_76c59411-4106-4351-b215-af96bd3083ec" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpenseMember_0179cfbe-4dd4-461a-9b5e-fa5e15eeffe6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpenseMember_d54f888f-d6c0-477e-aa27-0b4bba4d8a22" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GeneralAndAdministrativeExpenseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_76c59411-4106-4351-b215-af96bd3083ec" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpenseMember_d54f888f-d6c0-477e-aa27-0b4bba4d8a22" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseMember_6162d308-5544-4ac0-8fa3-3b42424e586d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InterestExpenseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_76c59411-4106-4351-b215-af96bd3083ec" xlink:to="loc_us-gaap_InterestExpenseMember_6162d308-5544-4ac0-8fa3-3b42424e586d" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/DerivativeInstrumentsandHedgingActivitiesDerivativesNotDesignatedasHedgingInstrumentsDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#DerivativeInstrumentsandHedgingActivitiesDerivativesNotDesignatedasHedgingInstrumentsDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/DerivativeInstrumentsandHedgingActivitiesDerivativesNotDesignatedasHedgingInstrumentsDetails" xlink:type="extended" id="i9dcc58e6c5014a04a9d7f6f629b2b6f1_DerivativeInstrumentsandHedgingActivitiesDerivativesNotDesignatedasHedgingInstrumentsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_16e2b3b9-6c0f-41de-8590-5ee6c63b7a3d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet_dc715aa2-238b-4051-8f73-2011246d3a91" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_16e2b3b9-6c0f-41de-8590-5ee6c63b7a3d" xlink:to="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet_dc715aa2-238b-4051-8f73-2011246d3a91" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_2838c0dd-7be1-4ac6-b316-1c2f70858ed4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_16e2b3b9-6c0f-41de-8590-5ee6c63b7a3d" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_2838c0dd-7be1-4ac6-b316-1c2f70858ed4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_91f8a9e4-6e44-4d7b-adba-dfa81de48df8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_2838c0dd-7be1-4ac6-b316-1c2f70858ed4" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_91f8a9e4-6e44-4d7b-adba-dfa81de48df8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_91f8a9e4-6e44-4d7b-adba-dfa81de48df8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_91f8a9e4-6e44-4d7b-adba-dfa81de48df8" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_91f8a9e4-6e44-4d7b-adba-dfa81de48df8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_888923ec-a175-4720-91e2-d31ca1845156" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_91f8a9e4-6e44-4d7b-adba-dfa81de48df8" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_888923ec-a175-4720-91e2-d31ca1845156" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeContractMember_4807417a-9633-4bcf-b1c2-97a7a4bcfd7b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ForeignExchangeContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_888923ec-a175-4720-91e2-d31ca1845156" xlink:to="loc_us-gaap_ForeignExchangeContractMember_4807417a-9633-4bcf-b1c2-97a7a4bcfd7b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TotalReturnSwapMember_d74edf4f-e2df-4db8-b86c-a4f81fb9803f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TotalReturnSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_888923ec-a175-4720-91e2-d31ca1845156" xlink:to="loc_us-gaap_TotalReturnSwapMember_d74edf4f-e2df-4db8-b86c-a4f81fb9803f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_dd0e599a-ec35-4692-8da2-345b008014aa" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeStatementLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_2838c0dd-7be1-4ac6-b316-1c2f70858ed4" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_dd0e599a-ec35-4692-8da2-345b008014aa" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_dd0e599a-ec35-4692-8da2-345b008014aa_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_dd0e599a-ec35-4692-8da2-345b008014aa" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_dd0e599a-ec35-4692-8da2-345b008014aa_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_c3bb956d-b73e-437f-a368-f4d5f4944612" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_dd0e599a-ec35-4692-8da2-345b008014aa" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_c3bb956d-b73e-437f-a368-f4d5f4944612" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpenseMember_fcd6bb4c-a6f6-4858-9ac0-081ea296fd26" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GeneralAndAdministrativeExpenseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_c3bb956d-b73e-437f-a368-f4d5f4944612" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpenseMember_fcd6bb4c-a6f6-4858-9ac0-081ea296fd26" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_InterestAndOtherIncomeMemberMember_b1c36362-5b78-41b1-aa2b-33a27ba11a2e" xlink:href="amat-20211031.xsd#amat_InterestAndOtherIncomeMemberMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_c3bb956d-b73e-437f-a368-f4d5f4944612" xlink:to="loc_amat_InterestAndOtherIncomeMemberMember_b1c36362-5b78-41b1-aa2b-33a27ba11a2e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfSalesMember_f45c0f68-cd6b-4cd7-9c32-ec420b47b119" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CostOfSalesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_c3bb956d-b73e-437f-a368-f4d5f4944612" xlink:to="loc_us-gaap_CostOfSalesMember_f45c0f68-cd6b-4cd7-9c32-ec420b47b119" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenseMember_1752e29a-d265-4aa4-b807-77c4c4afc8e6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingExpenseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_c3bb956d-b73e-437f-a368-f4d5f4944612" xlink:to="loc_us-gaap_OperatingExpenseMember_1752e29a-d265-4aa4-b807-77c4c4afc8e6" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/ContractBalancesNarrativeDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#ContractBalancesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/ContractBalancesNarrativeDetails" xlink:type="extended" id="i7cf15cbc5a144fa9812a58ff91c4bcec_ContractBalancesNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_99e1dc9f-28c4-4790-94b1-fdaaafb89516" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligation_dfd12949-fc14-4494-a1fb-f256408c6e9e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_99e1dc9f-28c4-4790-94b1-fdaaafb89516" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligation_dfd12949-fc14-4494-a1fb-f256408c6e9e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationPercentage_1319316c-eb1a-40b4-a217-f6611b3315b5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligationPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_99e1dc9f-28c4-4790-94b1-fdaaafb89516" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationPercentage_1319316c-eb1a-40b4-a217-f6611b3315b5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_7797e127-50b5-4858-b668-05f51862bb12" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_99e1dc9f-28c4-4790-94b1-fdaaafb89516" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_7797e127-50b5-4858-b668-05f51862bb12" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_ec1f291d-9973-44b5-9c3a-8657f9495639" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_99e1dc9f-28c4-4790-94b1-fdaaafb89516" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_ec1f291d-9973-44b5-9c3a-8657f9495639" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerDurationAxis_6a4ab39a-a795-4ba3-a734-32c0999df0db" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ContractWithCustomerDurationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_ec1f291d-9973-44b5-9c3a-8657f9495639" xlink:to="loc_us-gaap_ContractWithCustomerDurationAxis_6a4ab39a-a795-4ba3-a734-32c0999df0db" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerDurationDomain_6a4ab39a-a795-4ba3-a734-32c0999df0db_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ContractWithCustomerDurationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ContractWithCustomerDurationAxis_6a4ab39a-a795-4ba3-a734-32c0999df0db" xlink:to="loc_us-gaap_ContractWithCustomerDurationDomain_6a4ab39a-a795-4ba3-a734-32c0999df0db_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerDurationDomain_617990ef-4ebd-4190-96fd-654b834785b2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ContractWithCustomerDurationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ContractWithCustomerDurationAxis_6a4ab39a-a795-4ba3-a734-32c0999df0db" xlink:to="loc_us-gaap_ContractWithCustomerDurationDomain_617990ef-4ebd-4190-96fd-654b834785b2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermContractWithCustomerMember_a02638d2-332e-4ff0-a071-30ed270d0124" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermContractWithCustomerMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ContractWithCustomerDurationDomain_617990ef-4ebd-4190-96fd-654b834785b2" xlink:to="loc_us-gaap_LongTermContractWithCustomerMember_a02638d2-332e-4ff0-a071-30ed270d0124" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_9aace183-0152-435e-8ef4-56b5cec0eca5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_ec1f291d-9973-44b5-9c3a-8657f9495639" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_9aace183-0152-435e-8ef4-56b5cec0eca5" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/ContractBalancesNarrativeDetails_1" xlink:type="simple" xlink:href="amat-20211031.xsd#ContractBalancesNarrativeDetails_1"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/ContractBalancesNarrativeDetails_1" xlink:type="extended" id="i7362238703e9464a918eaa1151941dfb_ContractBalancesNarrativeDetails_1">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_99e1dc9f-28c4-4790-94b1-fdaaafb89516" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligation_dfd12949-fc14-4494-a1fb-f256408c6e9e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_99e1dc9f-28c4-4790-94b1-fdaaafb89516" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligation_dfd12949-fc14-4494-a1fb-f256408c6e9e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationPercentage_1319316c-eb1a-40b4-a217-f6611b3315b5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligationPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_99e1dc9f-28c4-4790-94b1-fdaaafb89516" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationPercentage_1319316c-eb1a-40b4-a217-f6611b3315b5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_7797e127-50b5-4858-b668-05f51862bb12" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_99e1dc9f-28c4-4790-94b1-fdaaafb89516" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_7797e127-50b5-4858-b668-05f51862bb12" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_ec1f291d-9973-44b5-9c3a-8657f9495639" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_99e1dc9f-28c4-4790-94b1-fdaaafb89516" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_ec1f291d-9973-44b5-9c3a-8657f9495639" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerDurationAxis_6a4ab39a-a795-4ba3-a734-32c0999df0db" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ContractWithCustomerDurationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_ec1f291d-9973-44b5-9c3a-8657f9495639" xlink:to="loc_us-gaap_ContractWithCustomerDurationAxis_6a4ab39a-a795-4ba3-a734-32c0999df0db" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerDurationDomain_6a4ab39a-a795-4ba3-a734-32c0999df0db_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ContractWithCustomerDurationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ContractWithCustomerDurationAxis_6a4ab39a-a795-4ba3-a734-32c0999df0db" xlink:to="loc_us-gaap_ContractWithCustomerDurationDomain_6a4ab39a-a795-4ba3-a734-32c0999df0db_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerDurationDomain_617990ef-4ebd-4190-96fd-654b834785b2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ContractWithCustomerDurationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ContractWithCustomerDurationAxis_6a4ab39a-a795-4ba3-a734-32c0999df0db" xlink:to="loc_us-gaap_ContractWithCustomerDurationDomain_617990ef-4ebd-4190-96fd-654b834785b2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermContractWithCustomerMember_a02638d2-332e-4ff0-a071-30ed270d0124" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermContractWithCustomerMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ContractWithCustomerDurationDomain_617990ef-4ebd-4190-96fd-654b834785b2" xlink:to="loc_us-gaap_LongTermContractWithCustomerMember_a02638d2-332e-4ff0-a071-30ed270d0124" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/BalanceSheetDetailPropertyPlantandEquipmentDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#BalanceSheetDetailPropertyPlantandEquipmentDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/BalanceSheetDetailPropertyPlantandEquipmentDetails" xlink:type="extended" id="id4d2fdf6e484486e852b8e9402b6adaf_BalanceSheetDetailPropertyPlantandEquipmentDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_a1a9c950-11f1-4d53-8d1c-69553d19b7d0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_6c287ab9-3ba2-4e52-abac-6cb1aa4a04bf" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNetAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_a1a9c950-11f1-4d53-8d1c-69553d19b7d0" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_6c287ab9-3ba2-4e52-abac-6cb1aa4a04bf" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_28e2caf3-b7d2-4e40-9add-7d6c472a7403" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLife"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_6c287ab9-3ba2-4e52-abac-6cb1aa4a04bf" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_28e2caf3-b7d2-4e40-9add-7d6c472a7403" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_84665126-be41-4565-aee1-b0d922e1736e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_6c287ab9-3ba2-4e52-abac-6cb1aa4a04bf" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_84665126-be41-4565-aee1-b0d922e1736e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_e4b34e88-09b5-4641-b7f7-30c8ea67ee4a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_6c287ab9-3ba2-4e52-abac-6cb1aa4a04bf" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_e4b34e88-09b5-4641-b7f7-30c8ea67ee4a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_b7d96f16-0779-4436-9aef-66249187dd46" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_6c287ab9-3ba2-4e52-abac-6cb1aa4a04bf" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_b7d96f16-0779-4436-9aef-66249187dd46" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Depreciation_8cb67cbe-246a-4f77-8892-075d211191f2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Depreciation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_a1a9c950-11f1-4d53-8d1c-69553d19b7d0" xlink:to="loc_us-gaap_Depreciation_8cb67cbe-246a-4f77-8892-075d211191f2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_c8ca0bd1-2867-4892-baf0-f05d45be3960" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_a1a9c950-11f1-4d53-8d1c-69553d19b7d0" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_c8ca0bd1-2867-4892-baf0-f05d45be3960" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_fba1cf97-744e-4925-8b9c-e45b194f1381" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_c8ca0bd1-2867-4892-baf0-f05d45be3960" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_fba1cf97-744e-4925-8b9c-e45b194f1381" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_fba1cf97-744e-4925-8b9c-e45b194f1381_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_fba1cf97-744e-4925-8b9c-e45b194f1381" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_fba1cf97-744e-4925-8b9c-e45b194f1381_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_500b4457-d2a8-4b3e-91aa-c0e217109be4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_fba1cf97-744e-4925-8b9c-e45b194f1381" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_500b4457-d2a8-4b3e-91aa-c0e217109be4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LandAndLandImprovementsMember_8c843fc6-d37b-4e3f-a8f1-fcf3f3ef1c4f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LandAndLandImprovementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_500b4457-d2a8-4b3e-91aa-c0e217109be4" xlink:to="loc_us-gaap_LandAndLandImprovementsMember_8c843fc6-d37b-4e3f-a8f1-fcf3f3ef1c4f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BuildingAndBuildingImprovementsMember_b0661cec-8f52-4c70-9593-dfa034ecc2dc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BuildingAndBuildingImprovementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_500b4457-d2a8-4b3e-91aa-c0e217109be4" xlink:to="loc_us-gaap_BuildingAndBuildingImprovementsMember_b0661cec-8f52-4c70-9593-dfa034ecc2dc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MachineryAndEquipmentMember_f750b0bd-2596-49a4-b3ab-3caa0df1468f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_MachineryAndEquipmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_500b4457-d2a8-4b3e-91aa-c0e217109be4" xlink:to="loc_us-gaap_MachineryAndEquipmentMember_f750b0bd-2596-49a4-b3ab-3caa0df1468f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FurnitureAndFixturesMember_04a96eb8-68b1-49e9-8d32-e58788f9ff7a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FurnitureAndFixturesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_500b4457-d2a8-4b3e-91aa-c0e217109be4" xlink:to="loc_us-gaap_FurnitureAndFixturesMember_04a96eb8-68b1-49e9-8d32-e58788f9ff7a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConstructionInProgressMember_9ac5d44e-883c-4a16-b874-2da8df8826e2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ConstructionInProgressMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_500b4457-d2a8-4b3e-91aa-c0e217109be4" xlink:to="loc_us-gaap_ConstructionInProgressMember_9ac5d44e-883c-4a16-b874-2da8df8826e2" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_a0c874a3-8218-433a-b40b-599cd338c6f6" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_c8ca0bd1-2867-4892-baf0-f05d45be3960" xlink:to="loc_srt_RangeAxis_a0c874a3-8218-433a-b40b-599cd338c6f6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_a0c874a3-8218-433a-b40b-599cd338c6f6_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_a0c874a3-8218-433a-b40b-599cd338c6f6" xlink:to="loc_srt_RangeMember_a0c874a3-8218-433a-b40b-599cd338c6f6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_186bde9d-aaf8-4a3d-ad79-9b814e26309e" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_a0c874a3-8218-433a-b40b-599cd338c6f6" xlink:to="loc_srt_RangeMember_186bde9d-aaf8-4a3d-ad79-9b814e26309e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_7d358f63-0a19-4bd4-9740-89e319b1d302" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_186bde9d-aaf8-4a3d-ad79-9b814e26309e" xlink:to="loc_srt_MinimumMember_7d358f63-0a19-4bd4-9740-89e319b1d302" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_2a230825-cbe9-4ee7-8b31-c6a6ff199970" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_186bde9d-aaf8-4a3d-ad79-9b814e26309e" xlink:to="loc_srt_MaximumMember_2a230825-cbe9-4ee7-8b31-c6a6ff199970" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/BusinessCombinationDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#BusinessCombinationDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/BusinessCombinationDetails" xlink:type="extended" id="idbe983d0b9124240a66c629ef6d2f583_BusinessCombinationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_9d8e426b-0276-442b-8237-3a00b66c3572" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnContractTermination_d0ca4dfc-9a58-4175-bb60-f5b391531568" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GainLossOnContractTermination"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_9d8e426b-0276-442b-8237-3a00b66c3572" xlink:to="loc_us-gaap_GainLossOnContractTermination_d0ca4dfc-9a58-4175-bb60-f5b391531568" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_09e69d0a-0fa0-4ace-8f18-bc4785b08a57" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_9d8e426b-0276-442b-8237-3a00b66c3572" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_09e69d0a-0fa0-4ace-8f18-bc4785b08a57" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_96ae8eff-d293-4440-9c59-becef76982c7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_09e69d0a-0fa0-4ace-8f18-bc4785b08a57" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_96ae8eff-d293-4440-9c59-becef76982c7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_96ae8eff-d293-4440-9c59-becef76982c7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_96ae8eff-d293-4440-9c59-becef76982c7" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_96ae8eff-d293-4440-9c59-becef76982c7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_403a51ea-f339-4018-a00e-adcbe632aac1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_96ae8eff-d293-4440-9c59-becef76982c7" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_403a51ea-f339-4018-a00e-adcbe632aac1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_KokusaiElectricMember_f1f4a71a-5e4a-4735-954e-6a6ff9b90863" xlink:href="amat-20211031.xsd#amat_KokusaiElectricMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_403a51ea-f339-4018-a00e-adcbe632aac1" xlink:to="loc_amat_KokusaiElectricMember_f1f4a71a-5e4a-4735-954e-6a6ff9b90863" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/GoodwillPurchasedTechnologyandOtherIntangibleAssetsGoodwillDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#GoodwillPurchasedTechnologyandOtherIntangibleAssetsGoodwillDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/GoodwillPurchasedTechnologyandOtherIntangibleAssetsGoodwillDetails" xlink:type="extended" id="if4958e12c3f4406d873e0e37960b79f6_GoodwillPurchasedTechnologyandOtherIntangibleAssetsGoodwillDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillLineItems_cb77fa5d-06c6-449c-ad75-82547f2c1ff1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GoodwillLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_d92be064-73cb-4696-bdd4-9d95b7b1100e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_cb77fa5d-06c6-449c-ad75-82547f2c1ff1" xlink:to="loc_us-gaap_Goodwill_d92be064-73cb-4696-bdd4-9d95b7b1100e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfGoodwillTable_bd0ceb34-8d1e-4786-8324-83edb18b2da4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfGoodwillTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_GoodwillLineItems_cb77fa5d-06c6-449c-ad75-82547f2c1ff1" xlink:to="loc_us-gaap_ScheduleOfGoodwillTable_bd0ceb34-8d1e-4786-8324-83edb18b2da4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_d6ed07f1-56eb-4032-806a-a2de93a7e433" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_bd0ceb34-8d1e-4786-8324-83edb18b2da4" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_d6ed07f1-56eb-4032-806a-a2de93a7e433" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_d6ed07f1-56eb-4032-806a-a2de93a7e433_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_d6ed07f1-56eb-4032-806a-a2de93a7e433" xlink:to="loc_us-gaap_SegmentDomain_d6ed07f1-56eb-4032-806a-a2de93a7e433_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_55a106a9-0486-4770-bb4f-1aa0743cd1c8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_d6ed07f1-56eb-4032-806a-a2de93a7e433" xlink:to="loc_us-gaap_SegmentDomain_55a106a9-0486-4770-bb4f-1aa0743cd1c8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_SemiconductorSystemsMember_998c2159-dfd2-4d5f-8631-d020babe48a2" xlink:href="amat-20211031.xsd#amat_SemiconductorSystemsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_55a106a9-0486-4770-bb4f-1aa0743cd1c8" xlink:to="loc_amat_SemiconductorSystemsMember_998c2159-dfd2-4d5f-8631-d020babe48a2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_AppliedGlobalServicesMember_f64a3e78-61c8-4657-a893-a6bbac095279" xlink:href="amat-20211031.xsd#amat_AppliedGlobalServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_55a106a9-0486-4770-bb4f-1aa0743cd1c8" xlink:to="loc_amat_AppliedGlobalServicesMember_f64a3e78-61c8-4657-a893-a6bbac095279" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_DisplayandAdjacentMarketsMember_268531b0-8eeb-4114-af41-1f04d4d0de31" xlink:href="amat-20211031.xsd#amat_DisplayandAdjacentMarketsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_55a106a9-0486-4770-bb4f-1aa0743cd1c8" xlink:to="loc_amat_DisplayandAdjacentMarketsMember_268531b0-8eeb-4114-af41-1f04d4d0de31" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_aa8d49f5-1879-4c17-a559-ff124781370b" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_bd0ceb34-8d1e-4786-8324-83edb18b2da4" xlink:to="loc_srt_ConsolidationItemsAxis_aa8d49f5-1879-4c17-a559-ff124781370b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_aa8d49f5-1879-4c17-a559-ff124781370b_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_aa8d49f5-1879-4c17-a559-ff124781370b" xlink:to="loc_srt_ConsolidationItemsDomain_aa8d49f5-1879-4c17-a559-ff124781370b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_df76a764-8c8e-439e-b63f-3c34ecf07507" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_aa8d49f5-1879-4c17-a559-ff124781370b" xlink:to="loc_srt_ConsolidationItemsDomain_df76a764-8c8e-439e-b63f-3c34ecf07507" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_d76d3864-12cb-496f-963f-f5e61dbc8b64" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_df76a764-8c8e-439e-b63f-3c34ecf07507" xlink:to="loc_us-gaap_OperatingSegmentsMember_d76d3864-12cb-496f-963f-f5e61dbc8b64" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_CorporateAndReconcilingItemsMember_9751e36e-ef4d-4054-9e3e-9744ab2d1acb" xlink:href="amat-20211031.xsd#amat_CorporateAndReconcilingItemsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_df76a764-8c8e-439e-b63f-3c34ecf07507" xlink:to="loc_amat_CorporateAndReconcilingItemsMember_9751e36e-ef4d-4054-9e3e-9744ab2d1acb" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/GoodwillPurchasedTechnologyandOtherIntangibleAssetsNarrativeDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#GoodwillPurchasedTechnologyandOtherIntangibleAssetsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/GoodwillPurchasedTechnologyandOtherIntangibleAssetsNarrativeDetails" xlink:type="extended" id="i4ae842d1a6924242b818f10a8043f5dc_GoodwillPurchasedTechnologyandOtherIntangibleAssetsNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_5b0303a3-daf5-40d1-bd16-8ac56553a910" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillPeriodIncreaseDecrease_061b93e2-04a4-42ce-9193-13f40fcd23d3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GoodwillPeriodIncreaseDecrease"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_5b0303a3-daf5-40d1-bd16-8ac56553a910" xlink:to="loc_us-gaap_GoodwillPeriodIncreaseDecrease_061b93e2-04a4-42ce-9193-13f40fcd23d3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_a58015a2-86b1-4fd8-8f5f-4d56fa475131" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetUsefulLife"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_5b0303a3-daf5-40d1-bd16-8ac56553a910" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_a58015a2-86b1-4fd8-8f5f-4d56fa475131" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_a0cf748a-1a5f-43f6-8efe-236d6a92a9d8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_5b0303a3-daf5-40d1-bd16-8ac56553a910" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_a0cf748a-1a5f-43f6-8efe-236d6a92a9d8" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_eadc727f-af21-4624-b7ec-3bbb427de8b1" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_a0cf748a-1a5f-43f6-8efe-236d6a92a9d8" xlink:to="loc_srt_RangeAxis_eadc727f-af21-4624-b7ec-3bbb427de8b1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_eadc727f-af21-4624-b7ec-3bbb427de8b1_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_eadc727f-af21-4624-b7ec-3bbb427de8b1" xlink:to="loc_srt_RangeMember_eadc727f-af21-4624-b7ec-3bbb427de8b1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_ce977965-c01d-42f9-acec-269346ef22a8" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_eadc727f-af21-4624-b7ec-3bbb427de8b1" xlink:to="loc_srt_RangeMember_ce977965-c01d-42f9-acec-269346ef22a8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_5dce0a9b-3d0c-486c-ab82-be1af113f294" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_ce977965-c01d-42f9-acec-269346ef22a8" xlink:to="loc_srt_MinimumMember_5dce0a9b-3d0c-486c-ab82-be1af113f294" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_e8018931-ef09-4671-8c3c-5fcff8dd60df" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_ce977965-c01d-42f9-acec-269346ef22a8" xlink:to="loc_srt_MaximumMember_e8018931-ef09-4671-8c3c-5fcff8dd60df" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/GoodwillPurchasedTechnologyandOtherIntangibleAssetsPurchasedTechnologyandIntangibleAssetsDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#GoodwillPurchasedTechnologyandOtherIntangibleAssetsPurchasedTechnologyandIntangibleAssetsDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/GoodwillPurchasedTechnologyandOtherIntangibleAssetsPurchasedTechnologyandIntangibleAssetsDetails" xlink:type="extended" id="i15053d408b034ed2aff0310f3419a0c5_GoodwillPurchasedTechnologyandOtherIntangibleAssetsPurchasedTechnologyandIntangibleAssetsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_amat_SummaryOfPurchasedTechnologyAndIntangibleAssetsLineItems_8798d926-272d-46f6-9e7d-88df3392ffb1" xlink:href="amat-20211031.xsd#amat_SummaryOfPurchasedTechnologyAndIntangibleAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_6ba4296f-56f7-407d-a48f-ac783432a994" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_amat_SummaryOfPurchasedTechnologyAndIntangibleAssetsLineItems_8798d926-272d-46f6-9e7d-88df3392ffb1" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_6ba4296f-56f7-407d-a48f-ac783432a994" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_SummaryOfPurchasedTechnologyAndIntangibleAssetsTable_da898265-09e7-4789-924b-47eeb272c714" xlink:href="amat-20211031.xsd#amat_SummaryOfPurchasedTechnologyAndIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_amat_SummaryOfPurchasedTechnologyAndIntangibleAssetsLineItems_8798d926-272d-46f6-9e7d-88df3392ffb1" xlink:to="loc_amat_SummaryOfPurchasedTechnologyAndIntangibleAssetsTable_da898265-09e7-4789-924b-47eeb272c714" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_b99760a7-f5d5-4ea7-b52f-96d10228c44e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_amat_SummaryOfPurchasedTechnologyAndIntangibleAssetsTable_da898265-09e7-4789-924b-47eeb272c714" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_b99760a7-f5d5-4ea7-b52f-96d10228c44e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_b99760a7-f5d5-4ea7-b52f-96d10228c44e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_b99760a7-f5d5-4ea7-b52f-96d10228c44e" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_b99760a7-f5d5-4ea7-b52f-96d10228c44e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_6f27e8a7-079b-4ce9-b2d7-2478b2bb4a88" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_b99760a7-f5d5-4ea7-b52f-96d10228c44e" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_6f27e8a7-079b-4ce9-b2d7-2478b2bb4a88" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TechnologyBasedIntangibleAssetsMember_7fd8b6fe-c095-4174-8893-8e4122488c2c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TechnologyBasedIntangibleAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_6f27e8a7-079b-4ce9-b2d7-2478b2bb4a88" xlink:to="loc_us-gaap_TechnologyBasedIntangibleAssetsMember_7fd8b6fe-c095-4174-8893-8e4122488c2c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherIntangibleAssetsMember_7377db7f-8543-49ca-982e-2965f5005733" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherIntangibleAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_6f27e8a7-079b-4ce9-b2d7-2478b2bb4a88" xlink:to="loc_us-gaap_OtherIntangibleAssetsMember_7377db7f-8543-49ca-982e-2965f5005733" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/GoodwillPurchasedTechnologyandOtherIntangibleAssetsFinitelivedIntangibleAssetsDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#GoodwillPurchasedTechnologyandOtherIntangibleAssetsFinitelivedIntangibleAssetsDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/GoodwillPurchasedTechnologyandOtherIntangibleAssetsFinitelivedIntangibleAssetsDetails" xlink:type="extended" id="i507d6b5098dc4f02bf30f70099d5cc2d_GoodwillPurchasedTechnologyandOtherIntangibleAssetsFinitelivedIntangibleAssetsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_311192ef-ccce-4335-8e38-7aa7cd55d152" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_b6514aa8-82e5-4fcf-a55f-4f9783a7547a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNetAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_311192ef-ccce-4335-8e38-7aa7cd55d152" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_b6514aa8-82e5-4fcf-a55f-4f9783a7547a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_76d7cba3-7aab-4df6-9d09-4437ddeae0df" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_b6514aa8-82e5-4fcf-a55f-4f9783a7547a" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_76d7cba3-7aab-4df6-9d09-4437ddeae0df" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_150036c1-e3c6-43bc-af21-ed82b7322106" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_b6514aa8-82e5-4fcf-a55f-4f9783a7547a" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_150036c1-e3c6-43bc-af21-ed82b7322106" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_ee3362d6-4252-418f-a1a2-890e0affcccf" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_b6514aa8-82e5-4fcf-a55f-4f9783a7547a" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_ee3362d6-4252-418f-a1a2-890e0affcccf" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_548bc77b-6442-4796-a44e-012ddddef3ba" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_311192ef-ccce-4335-8e38-7aa7cd55d152" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_548bc77b-6442-4796-a44e-012ddddef3ba" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_f3259444-fafe-4709-85f0-fb906972c7f4" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_548bc77b-6442-4796-a44e-012ddddef3ba" xlink:to="loc_srt_ConsolidationItemsAxis_f3259444-fafe-4709-85f0-fb906972c7f4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_f3259444-fafe-4709-85f0-fb906972c7f4_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_f3259444-fafe-4709-85f0-fb906972c7f4" xlink:to="loc_srt_ConsolidationItemsDomain_f3259444-fafe-4709-85f0-fb906972c7f4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_085aa3c1-7f3d-43a4-95ce-8078ba8f58d7" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_f3259444-fafe-4709-85f0-fb906972c7f4" xlink:to="loc_srt_ConsolidationItemsDomain_085aa3c1-7f3d-43a4-95ce-8078ba8f58d7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_2461ceba-70b9-42e9-a15b-2f7711e52047" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_085aa3c1-7f3d-43a4-95ce-8078ba8f58d7" xlink:to="loc_us-gaap_OperatingSegmentsMember_2461ceba-70b9-42e9-a15b-2f7711e52047" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_CorporateAndReconcilingItemsMember_f461dd7b-3c47-48be-8173-23a534f721eb" xlink:href="amat-20211031.xsd#amat_CorporateAndReconcilingItemsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_085aa3c1-7f3d-43a4-95ce-8078ba8f58d7" xlink:to="loc_amat_CorporateAndReconcilingItemsMember_f461dd7b-3c47-48be-8173-23a534f721eb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_f685c493-59a2-49df-8c70-61914ee701ed" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_548bc77b-6442-4796-a44e-012ddddef3ba" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_f685c493-59a2-49df-8c70-61914ee701ed" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_f685c493-59a2-49df-8c70-61914ee701ed_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_f685c493-59a2-49df-8c70-61914ee701ed" xlink:to="loc_us-gaap_SegmentDomain_f685c493-59a2-49df-8c70-61914ee701ed_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_e9fdc1d0-a2dc-472c-a5b6-ff1ad2bfce12" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_f685c493-59a2-49df-8c70-61914ee701ed" xlink:to="loc_us-gaap_SegmentDomain_e9fdc1d0-a2dc-472c-a5b6-ff1ad2bfce12" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_SemiconductorSystemsMember_93e882df-955b-48a3-9144-8eed5a5adf80" xlink:href="amat-20211031.xsd#amat_SemiconductorSystemsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_e9fdc1d0-a2dc-472c-a5b6-ff1ad2bfce12" xlink:to="loc_amat_SemiconductorSystemsMember_93e882df-955b-48a3-9144-8eed5a5adf80" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_AppliedGlobalServicesMember_00e94fca-b2a2-4d55-911a-366aeed8dc40" xlink:href="amat-20211031.xsd#amat_AppliedGlobalServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_e9fdc1d0-a2dc-472c-a5b6-ff1ad2bfce12" xlink:to="loc_amat_AppliedGlobalServicesMember_00e94fca-b2a2-4d55-911a-366aeed8dc40" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_DisplayandAdjacentMarketsMember_d614de98-98fe-4f5b-b64b-57b533996771" xlink:href="amat-20211031.xsd#amat_DisplayandAdjacentMarketsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_e9fdc1d0-a2dc-472c-a5b6-ff1ad2bfce12" xlink:to="loc_amat_DisplayandAdjacentMarketsMember_d614de98-98fe-4f5b-b64b-57b533996771" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_e4a57f39-45d2-47dd-b492-f369bb6ddf1b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_548bc77b-6442-4796-a44e-012ddddef3ba" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_e4a57f39-45d2-47dd-b492-f369bb6ddf1b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_e4a57f39-45d2-47dd-b492-f369bb6ddf1b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_e4a57f39-45d2-47dd-b492-f369bb6ddf1b" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_e4a57f39-45d2-47dd-b492-f369bb6ddf1b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_a108af88-e755-497a-8cdb-aeb825417ddc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_e4a57f39-45d2-47dd-b492-f369bb6ddf1b" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_a108af88-e755-497a-8cdb-aeb825417ddc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TechnologyBasedIntangibleAssetsMember_06496b05-df36-411e-8579-7858283a169a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TechnologyBasedIntangibleAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_a108af88-e755-497a-8cdb-aeb825417ddc" xlink:to="loc_us-gaap_TechnologyBasedIntangibleAssetsMember_06496b05-df36-411e-8579-7858283a169a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherIntangibleAssetsMember_97573af9-a242-4934-8111-c6ba21fd660d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherIntangibleAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_a108af88-e755-497a-8cdb-aeb825417ddc" xlink:to="loc_us-gaap_OtherIntangibleAssetsMember_97573af9-a242-4934-8111-c6ba21fd660d" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/GoodwillPurchasedTechnologyandOtherIntangibleAssetsAmortizationExpenseDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#GoodwillPurchasedTechnologyandOtherIntangibleAssetsAmortizationExpenseDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/GoodwillPurchasedTechnologyandOtherIntangibleAssetsAmortizationExpenseDetails" xlink:type="extended" id="ic8e1e77a1be041f98b376ad43b25070a_GoodwillPurchasedTechnologyandOtherIntangibleAssetsAmortizationExpenseDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_f0eecf4a-49e6-42d0-8be2-eacba2a6c8f2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_755fde12-7f55-4aa6-9a40-f25bed29d484" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_f0eecf4a-49e6-42d0-8be2-eacba2a6c8f2" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_755fde12-7f55-4aa6-9a40-f25bed29d484" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_2fbcf3fe-7281-4218-96fd-19a8e1ba1e67" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_f0eecf4a-49e6-42d0-8be2-eacba2a6c8f2" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_2fbcf3fe-7281-4218-96fd-19a8e1ba1e67" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_ee72fb70-8073-478b-b330-9b9416623f54" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_2fbcf3fe-7281-4218-96fd-19a8e1ba1e67" xlink:to="loc_srt_ConsolidationItemsAxis_ee72fb70-8073-478b-b330-9b9416623f54" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_ee72fb70-8073-478b-b330-9b9416623f54_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_ee72fb70-8073-478b-b330-9b9416623f54" xlink:to="loc_srt_ConsolidationItemsDomain_ee72fb70-8073-478b-b330-9b9416623f54_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_cbabc7a9-58f5-4e2c-b3ec-946e7beaea2d" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_ee72fb70-8073-478b-b330-9b9416623f54" xlink:to="loc_srt_ConsolidationItemsDomain_cbabc7a9-58f5-4e2c-b3ec-946e7beaea2d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_412b181c-9029-4547-a4fd-d745bf871108" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_cbabc7a9-58f5-4e2c-b3ec-946e7beaea2d" xlink:to="loc_us-gaap_OperatingSegmentsMember_412b181c-9029-4547-a4fd-d745bf871108" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_CorporateAndReconcilingItemsMember_98d3d2de-fd76-46b3-8c02-2705232dcfa3" xlink:href="amat-20211031.xsd#amat_CorporateAndReconcilingItemsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_cbabc7a9-58f5-4e2c-b3ec-946e7beaea2d" xlink:to="loc_amat_CorporateAndReconcilingItemsMember_98d3d2de-fd76-46b3-8c02-2705232dcfa3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_53d86433-559c-4116-b70d-a13afc3656d1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_2fbcf3fe-7281-4218-96fd-19a8e1ba1e67" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_53d86433-559c-4116-b70d-a13afc3656d1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_53d86433-559c-4116-b70d-a13afc3656d1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_53d86433-559c-4116-b70d-a13afc3656d1" xlink:to="loc_us-gaap_SegmentDomain_53d86433-559c-4116-b70d-a13afc3656d1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_e6114328-270b-43a2-8ea7-43f115ed5250" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_53d86433-559c-4116-b70d-a13afc3656d1" xlink:to="loc_us-gaap_SegmentDomain_e6114328-270b-43a2-8ea7-43f115ed5250" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_SemiconductorSystemsMember_37bcc489-73cb-4783-862d-15506c9525bb" xlink:href="amat-20211031.xsd#amat_SemiconductorSystemsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_e6114328-270b-43a2-8ea7-43f115ed5250" xlink:to="loc_amat_SemiconductorSystemsMember_37bcc489-73cb-4783-862d-15506c9525bb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_AppliedGlobalServicesMember_30904f30-470e-4b72-8fcb-0de68c945258" xlink:href="amat-20211031.xsd#amat_AppliedGlobalServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_e6114328-270b-43a2-8ea7-43f115ed5250" xlink:to="loc_amat_AppliedGlobalServicesMember_30904f30-470e-4b72-8fcb-0de68c945258" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_DisplayandAdjacentMarketsMember_3d245363-dc8f-4564-8f67-4a618106326c" xlink:href="amat-20211031.xsd#amat_DisplayandAdjacentMarketsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_e6114328-270b-43a2-8ea7-43f115ed5250" xlink:to="loc_amat_DisplayandAdjacentMarketsMember_3d245363-dc8f-4564-8f67-4a618106326c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_a9d5cdc5-c859-4184-873c-e39cec20fffe" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeStatementLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_2fbcf3fe-7281-4218-96fd-19a8e1ba1e67" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_a9d5cdc5-c859-4184-873c-e39cec20fffe" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_a9d5cdc5-c859-4184-873c-e39cec20fffe_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_a9d5cdc5-c859-4184-873c-e39cec20fffe" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_a9d5cdc5-c859-4184-873c-e39cec20fffe_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_613996df-ddbe-4740-9de2-80d5c843cc6a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_a9d5cdc5-c859-4184-873c-e39cec20fffe" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_613996df-ddbe-4740-9de2-80d5c843cc6a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfSalesMember_2debcccb-b078-4571-98b7-df29fd351e86" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CostOfSalesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_613996df-ddbe-4740-9de2-80d5c843cc6a" xlink:to="loc_us-gaap_CostOfSalesMember_2debcccb-b078-4571-98b7-df29fd351e86" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpenseMember_919c0c55-1dbd-40b0-80fe-73298a0611b7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ResearchAndDevelopmentExpenseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_613996df-ddbe-4740-9de2-80d5c843cc6a" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpenseMember_919c0c55-1dbd-40b0-80fe-73298a0611b7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingAndMarketingExpenseMember_5893eb47-4eb7-493d-a47d-f7e857691dd4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SellingAndMarketingExpenseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_613996df-ddbe-4740-9de2-80d5c843cc6a" xlink:to="loc_us-gaap_SellingAndMarketingExpenseMember_5893eb47-4eb7-493d-a47d-f7e857691dd4" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/BorrowingFacilitiesandDebtNarrativeDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#BorrowingFacilitiesandDebtNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/BorrowingFacilitiesandDebtNarrativeDetails" xlink:type="extended" id="i3076719dd60941368821ed17cb31e0d8_BorrowingFacilitiesandDebtNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityLineItems_686bf9f1-3cf5-4607-936b-9575125420b4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LineOfCreditFacilityLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTerm_772b644f-5e78-4bf7-9ade-f93b47b4605a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_686bf9f1-3cf5-4607-936b-9575125420b4" xlink:to="loc_us-gaap_DebtInstrumentTerm_772b644f-5e78-4bf7-9ade-f93b47b4605a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_87c7c132-28fe-4334-8ba9-931444d6b4c9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_686bf9f1-3cf5-4607-936b-9575125420b4" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_87c7c132-28fe-4334-8ba9-931444d6b4c9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_LineOfCreditFacilityAccordionFeatureIncreaseLimit_fba20bac-a517-411c-8201-ac871ed4cc18" xlink:href="amat-20211031.xsd#amat_LineOfCreditFacilityAccordionFeatureIncreaseLimit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_686bf9f1-3cf5-4607-936b-9575125420b4" xlink:to="loc_amat_LineOfCreditFacilityAccordionFeatureIncreaseLimit_fba20bac-a517-411c-8201-ac871ed4cc18" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_LineOfCreditFacilityAccordionFeatureHigherBorrowingCapacityOption_4cca5c61-e89d-476f-b00c-9d503884e040" xlink:href="amat-20211031.xsd#amat_LineOfCreditFacilityAccordionFeatureHigherBorrowingCapacityOption"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_686bf9f1-3cf5-4607-936b-9575125420b4" xlink:to="loc_amat_LineOfCreditFacilityAccordionFeatureHigherBorrowingCapacityOption_4cca5c61-e89d-476f-b00c-9d503884e040" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCredit_a45388c3-5c19-4d68-966f-01df7299ab30" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LineOfCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_686bf9f1-3cf5-4607-936b-9575125420b4" xlink:to="loc_us-gaap_LineOfCredit_a45388c3-5c19-4d68-966f-01df7299ab30" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_CommercialPaperProgramAmount_dbeb4e52-3583-4b5e-9bd9-2b318fa60788" xlink:href="amat-20211031.xsd#amat_CommercialPaperProgramAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_686bf9f1-3cf5-4607-936b-9575125420b4" xlink:to="loc_amat_CommercialPaperProgramAmount_dbeb4e52-3583-4b5e-9bd9-2b318fa60788" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermBorrowings_a57bb449-284d-46a9-afdf-0ada0ada30f1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShortTermBorrowings"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_686bf9f1-3cf5-4607-936b-9575125420b4" xlink:to="loc_us-gaap_ShortTermBorrowings_a57bb449-284d-46a9-afdf-0ada0ada30f1" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_c20e2195-d3c7-4ed7-94e5-95518d1d0158" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_686bf9f1-3cf5-4607-936b-9575125420b4" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_c20e2195-d3c7-4ed7-94e5-95518d1d0158" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_8cf81736-9c07-4c4a-afe0-ec3d1e2403e4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_686bf9f1-3cf5-4607-936b-9575125420b4" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_8cf81736-9c07-4c4a-afe0-ec3d1e2403e4" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_083374e2-6493-438f-9206-744f5f7a3221" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RepaymentsOfLongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_686bf9f1-3cf5-4607-936b-9575125420b4" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_083374e2-6493-438f-9206-744f5f7a3221" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_ec98ab3a-290b-4561-b573-1a4173c7d4b5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_686bf9f1-3cf5-4607-936b-9575125420b4" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_ec98ab3a-290b-4561-b573-1a4173c7d4b5" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityTable_4dcea681-dc35-4007-ac94-fcd88174e52b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LineOfCreditFacilityTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_686bf9f1-3cf5-4607-936b-9575125420b4" xlink:to="loc_us-gaap_LineOfCreditFacilityTable_4dcea681-dc35-4007-ac94-fcd88174e52b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_d119dbd6-6b01-4a42-a7ca-537af256ac13" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_4dcea681-dc35-4007-ac94-fcd88174e52b" xlink:to="loc_us-gaap_CreditFacilityAxis_d119dbd6-6b01-4a42-a7ca-537af256ac13" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_d119dbd6-6b01-4a42-a7ca-537af256ac13_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_d119dbd6-6b01-4a42-a7ca-537af256ac13" xlink:to="loc_us-gaap_CreditFacilityDomain_d119dbd6-6b01-4a42-a7ca-537af256ac13_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_5477daa0-023a-4480-b5e6-c11eef43f7ac" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_d119dbd6-6b01-4a42-a7ca-537af256ac13" xlink:to="loc_us-gaap_CreditFacilityDomain_5477daa0-023a-4480-b5e6-c11eef43f7ac" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_af36bd88-b548-4ea5-adf6-21bcdddd588b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_5477daa0-023a-4480-b5e6-c11eef43f7ac" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_af36bd88-b548-4ea5-adf6-21bcdddd588b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignLineOfCreditMember_23a67ea6-f076-48d3-a926-e662dd95f069" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ForeignLineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_5477daa0-023a-4480-b5e6-c11eef43f7ac" xlink:to="loc_us-gaap_ForeignLineOfCreditMember_23a67ea6-f076-48d3-a926-e662dd95f069" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_ef9966d4-154a-4156-aa06-b7afcf67377b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_5477daa0-023a-4480-b5e6-c11eef43f7ac" xlink:to="loc_us-gaap_LineOfCreditMember_ef9966d4-154a-4156-aa06-b7afcf67377b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_c5913f5e-dd46-429c-8a1f-92756e32f1d8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_4dcea681-dc35-4007-ac94-fcd88174e52b" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_c5913f5e-dd46-429c-8a1f-92756e32f1d8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_c5913f5e-dd46-429c-8a1f-92756e32f1d8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_c5913f5e-dd46-429c-8a1f-92756e32f1d8" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_c5913f5e-dd46-429c-8a1f-92756e32f1d8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_4eb634da-979b-4677-b3bb-6ef7ec21373f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_c5913f5e-dd46-429c-8a1f-92756e32f1d8" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_4eb634da-979b-4677-b3bb-6ef7ec21373f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnsecuredDebtMember_619137c5-a534-438b-876f-f4a4b0655956" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnsecuredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_4eb634da-979b-4677-b3bb-6ef7ec21373f" xlink:to="loc_us-gaap_UnsecuredDebtMember_619137c5-a534-438b-876f-f4a4b0655956" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_UnsecuredTermLoanMember_1a764600-e6cb-4fcd-9088-5f51b8cddefd" xlink:href="amat-20211031.xsd#amat_UnsecuredTermLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_4eb634da-979b-4677-b3bb-6ef7ec21373f" xlink:to="loc_amat_UnsecuredTermLoanMember_1a764600-e6cb-4fcd-9088-5f51b8cddefd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPaperMember_765417a9-a4ad-4f05-86a0-8726827962f1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommercialPaperMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_4eb634da-979b-4677-b3bb-6ef7ec21373f" xlink:to="loc_us-gaap_CommercialPaperMember_765417a9-a4ad-4f05-86a0-8726827962f1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_35d76df6-81a2-4ccd-b574-b2d534194d5a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_4eb634da-979b-4677-b3bb-6ef7ec21373f" xlink:to="loc_us-gaap_SeniorNotesMember_35d76df6-81a2-4ccd-b574-b2d534194d5a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_c3c316ed-bd6c-4b52-9bd2-c3ad378c894e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_4dcea681-dc35-4007-ac94-fcd88174e52b" xlink:to="loc_us-gaap_DebtInstrumentAxis_c3c316ed-bd6c-4b52-9bd2-c3ad378c894e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_c3c316ed-bd6c-4b52-9bd2-c3ad378c894e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_c3c316ed-bd6c-4b52-9bd2-c3ad378c894e" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_c3c316ed-bd6c-4b52-9bd2-c3ad378c894e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_32f6324d-ee4d-4359-9e05-a6df6c26e7f3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_c3c316ed-bd6c-4b52-9bd2-c3ad378c894e" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_32f6324d-ee4d-4359-9e05-a6df6c26e7f3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_OnePointSeventyFivePercentUnsecuredSeniorNotesDue2030InterestPayableJune1AndDecember1Member_564220ef-b1d1-452b-a732-93a8f1114ded" xlink:href="amat-20211031.xsd#amat_OnePointSeventyFivePercentUnsecuredSeniorNotesDue2030InterestPayableJune1AndDecember1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_32f6324d-ee4d-4359-9e05-a6df6c26e7f3" xlink:to="loc_amat_OnePointSeventyFivePercentUnsecuredSeniorNotesDue2030InterestPayableJune1AndDecember1Member_564220ef-b1d1-452b-a732-93a8f1114ded" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_TwoPointSeventyFivePercentUnsecuredSeniorNotesDue2050InterestPayableJune1AndDecember1Member_a8ad2603-f18c-4bba-9c66-a0eaddeceb4d" xlink:href="amat-20211031.xsd#amat_TwoPointSeventyFivePercentUnsecuredSeniorNotesDue2050InterestPayableJune1AndDecember1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_32f6324d-ee4d-4359-9e05-a6df6c26e7f3" xlink:to="loc_amat_TwoPointSeventyFivePercentUnsecuredSeniorNotesDue2050InterestPayableJune1AndDecember1Member_a8ad2603-f18c-4bba-9c66-a0eaddeceb4d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_A43PercentUnsecuredSeniorNotesDue2021And2625PercentUnsecuredSeniorNotesDue2020Member_ca71bb84-0f40-42d5-af03-317dcdc276ae" xlink:href="amat-20211031.xsd#amat_A43PercentUnsecuredSeniorNotesDue2021And2625PercentUnsecuredSeniorNotesDue2020Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_32f6324d-ee4d-4359-9e05-a6df6c26e7f3" xlink:to="loc_amat_A43PercentUnsecuredSeniorNotesDue2021And2625PercentUnsecuredSeniorNotesDue2020Member_ca71bb84-0f40-42d5-af03-317dcdc276ae" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_FourPointThreeZeroZeroPercentUnsecuredSeniorNotesDue2021InterestPayableJune15AndDecember15Member_ce61689f-c61e-455a-83e1-1734354ca93c" xlink:href="amat-20211031.xsd#amat_FourPointThreeZeroZeroPercentUnsecuredSeniorNotesDue2021InterestPayableJune15AndDecember15Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_amat_A43PercentUnsecuredSeniorNotesDue2021And2625PercentUnsecuredSeniorNotesDue2020Member_ca71bb84-0f40-42d5-af03-317dcdc276ae" xlink:to="loc_amat_FourPointThreeZeroZeroPercentUnsecuredSeniorNotesDue2021InterestPayableJune15AndDecember15Member_ce61689f-c61e-455a-83e1-1734354ca93c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_TwoPointSixTwoFivePercentUnsecuredSeniorNotesDue2020InterestPayableApril1AndOctober1Member_1317fc09-e0be-48d8-8ea1-b625e8eaee66" xlink:href="amat-20211031.xsd#amat_TwoPointSixTwoFivePercentUnsecuredSeniorNotesDue2020InterestPayableApril1AndOctober1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_amat_A43PercentUnsecuredSeniorNotesDue2021And2625PercentUnsecuredSeniorNotesDue2020Member_ca71bb84-0f40-42d5-af03-317dcdc276ae" xlink:to="loc_amat_TwoPointSixTwoFivePercentUnsecuredSeniorNotesDue2020InterestPayableApril1AndOctober1Member_1317fc09-e0be-48d8-8ea1-b625e8eaee66" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/BorrowingFacilitiesandDebtDebtOutstandingDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#BorrowingFacilitiesandDebtDebtOutstandingDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/BorrowingFacilitiesandDebtDebtOutstandingDetails" xlink:type="extended" id="i18b43d2091c146109e9f9b84ae4e3b04_BorrowingFacilitiesandDebtDebtOutstandingDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_e4f144e8-9232-405c-809a-e99213755c2e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_81a7ce10-0220-47bb-b609-0bac54f040ff" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_e4f144e8-9232-405c-809a-e99213755c2e" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_81a7ce10-0220-47bb-b609-0bac54f040ff" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtByCurrentAndNoncurrentAbstract_70f3417f-198e-40de-94d7-b8125922c546" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtByCurrentAndNoncurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_e4f144e8-9232-405c-809a-e99213755c2e" xlink:to="loc_us-gaap_LongTermDebtByCurrentAndNoncurrentAbstract_70f3417f-198e-40de-94d7-b8125922c546" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_4103c5d3-7041-4ee7-92e8-0b7974164060" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermDebtByCurrentAndNoncurrentAbstract_70f3417f-198e-40de-94d7-b8125922c546" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_4103c5d3-7041-4ee7-92e8-0b7974164060" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscount_ce0a2d26-df6a-4f19-8675-a63b03d14b39" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentUnamortizedDiscount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermDebtByCurrentAndNoncurrentAbstract_70f3417f-198e-40de-94d7-b8125922c546" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscount_ce0a2d26-df6a-4f19-8675-a63b03d14b39" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFinanceCostsNet_7fb57380-04c5-4e5a-bf02-88a3d42a431c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredFinanceCostsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermDebtByCurrentAndNoncurrentAbstract_70f3417f-198e-40de-94d7-b8125922c546" xlink:to="loc_us-gaap_DeferredFinanceCostsNet_7fb57380-04c5-4e5a-bf02-88a3d42a431c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_df9824c4-259c-4ab2-aa1b-3602e039225f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermDebtByCurrentAndNoncurrentAbstract_70f3417f-198e-40de-94d7-b8125922c546" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_df9824c4-259c-4ab2-aa1b-3602e039225f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_0267d9e6-6821-4008-95c7-d75d9ebbbdfb" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_e4f144e8-9232-405c-809a-e99213755c2e" xlink:to="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_0267d9e6-6821-4008-95c7-d75d9ebbbdfb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_65f97ced-148e-48be-9de4-cc726480a7d2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_e4f144e8-9232-405c-809a-e99213755c2e" xlink:to="loc_us-gaap_DebtInstrumentTable_65f97ced-148e-48be-9de4-cc726480a7d2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_ba45926d-43f2-4f4c-bfb9-516d0c868b93" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_65f97ced-148e-48be-9de4-cc726480a7d2" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_ba45926d-43f2-4f4c-bfb9-516d0c868b93" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_ba45926d-43f2-4f4c-bfb9-516d0c868b93_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_ba45926d-43f2-4f4c-bfb9-516d0c868b93" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_ba45926d-43f2-4f4c-bfb9-516d0c868b93_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_966436b0-5b11-4af7-9e52-d8b04c02cab5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_ba45926d-43f2-4f4c-bfb9-516d0c868b93" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_966436b0-5b11-4af7-9e52-d8b04c02cab5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_29ac9a36-84f2-4202-8726-cb4e11db8967" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_966436b0-5b11-4af7-9e52-d8b04c02cab5" xlink:to="loc_us-gaap_SeniorNotesMember_29ac9a36-84f2-4202-8726-cb4e11db8967" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_9cb2f4af-e094-4262-8e27-3ab77fcfc031" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_65f97ced-148e-48be-9de4-cc726480a7d2" xlink:to="loc_us-gaap_DebtInstrumentAxis_9cb2f4af-e094-4262-8e27-3ab77fcfc031" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_9cb2f4af-e094-4262-8e27-3ab77fcfc031_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_9cb2f4af-e094-4262-8e27-3ab77fcfc031" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_9cb2f4af-e094-4262-8e27-3ab77fcfc031_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_76586913-fa34-48b2-85bf-d947e0e22d2d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_9cb2f4af-e094-4262-8e27-3ab77fcfc031" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_76586913-fa34-48b2-85bf-d947e0e22d2d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_ThreePointNineZeroPercentUnsecuredSeniorNotesDue2025InterestPayableApril1AndOctober1Member_cca26959-a6c1-462e-9dec-29f1823e19af" xlink:href="amat-20211031.xsd#amat_ThreePointNineZeroPercentUnsecuredSeniorNotesDue2025InterestPayableApril1AndOctober1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_76586913-fa34-48b2-85bf-d947e0e22d2d" xlink:to="loc_amat_ThreePointNineZeroPercentUnsecuredSeniorNotesDue2025InterestPayableApril1AndOctober1Member_cca26959-a6c1-462e-9dec-29f1823e19af" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_ThreePointThreeZeroZeroPercentUnsecuredSeniorNotesDue2027InterestPayableApril1AndOctober1Member_84d94fd2-008b-4e92-822f-69179fa33669" xlink:href="amat-20211031.xsd#amat_ThreePointThreeZeroZeroPercentUnsecuredSeniorNotesDue2027InterestPayableApril1AndOctober1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_76586913-fa34-48b2-85bf-d947e0e22d2d" xlink:to="loc_amat_ThreePointThreeZeroZeroPercentUnsecuredSeniorNotesDue2027InterestPayableApril1AndOctober1Member_84d94fd2-008b-4e92-822f-69179fa33669" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_OnePointSeventyFivePercentUnsecuredSeniorNotesDue2030InterestPayableJune1AndDecember1Member_cf324806-d647-4d71-bbcf-4d1eae221b76" xlink:href="amat-20211031.xsd#amat_OnePointSeventyFivePercentUnsecuredSeniorNotesDue2030InterestPayableJune1AndDecember1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_76586913-fa34-48b2-85bf-d947e0e22d2d" xlink:to="loc_amat_OnePointSeventyFivePercentUnsecuredSeniorNotesDue2030InterestPayableJune1AndDecember1Member_cf324806-d647-4d71-bbcf-4d1eae221b76" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_FivePointOneZeroZeroPercentUnsecuredSeniorNotesDue2035InterestPayableApril1AndOctober1Member_d76db91d-7b3f-4a60-a10f-267edf3fdca4" xlink:href="amat-20211031.xsd#amat_FivePointOneZeroZeroPercentUnsecuredSeniorNotesDue2035InterestPayableApril1AndOctober1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_76586913-fa34-48b2-85bf-d947e0e22d2d" xlink:to="loc_amat_FivePointOneZeroZeroPercentUnsecuredSeniorNotesDue2035InterestPayableApril1AndOctober1Member_d76db91d-7b3f-4a60-a10f-267edf3fdca4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_FivePointEightFiveZeroPercentUnsecuredSeniorNotesDue2041InterestPayableJune15AndDecember15Member_7730b162-5879-43e8-99a0-23306f2598c9" xlink:href="amat-20211031.xsd#amat_FivePointEightFiveZeroPercentUnsecuredSeniorNotesDue2041InterestPayableJune15AndDecember15Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_76586913-fa34-48b2-85bf-d947e0e22d2d" xlink:to="loc_amat_FivePointEightFiveZeroPercentUnsecuredSeniorNotesDue2041InterestPayableJune15AndDecember15Member_7730b162-5879-43e8-99a0-23306f2598c9" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_FourPointThreeFiveZeroPercentUnsecuredSeniorNotesDue2047InterestPayableApril1AndOctober1Member_98d56bbc-8561-43f6-9149-82b6c3b9d210" xlink:href="amat-20211031.xsd#amat_FourPointThreeFiveZeroPercentUnsecuredSeniorNotesDue2047InterestPayableApril1AndOctober1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_76586913-fa34-48b2-85bf-d947e0e22d2d" xlink:to="loc_amat_FourPointThreeFiveZeroPercentUnsecuredSeniorNotesDue2047InterestPayableApril1AndOctober1Member_98d56bbc-8561-43f6-9149-82b6c3b9d210" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_TwoPointSeventyFivePercentUnsecuredSeniorNotesDue2050InterestPayableJune1AndDecember1Member_2bbd9be1-8005-4df8-ba95-4915469bdcc5" xlink:href="amat-20211031.xsd#amat_TwoPointSeventyFivePercentUnsecuredSeniorNotesDue2050InterestPayableJune1AndDecember1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_76586913-fa34-48b2-85bf-d947e0e22d2d" xlink:to="loc_amat_TwoPointSeventyFivePercentUnsecuredSeniorNotesDue2050InterestPayableJune1AndDecember1Member_2bbd9be1-8005-4df8-ba95-4915469bdcc5" xlink:type="arc" order="6"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/SeveranceandRelatedChargesNarrativeDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#SeveranceandRelatedChargesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/SeveranceandRelatedChargesNarrativeDetails" xlink:type="extended" id="i49c41963af28408ba75de2bc466dcaa4_SeveranceandRelatedChargesNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_cf6de57d-9974-4f5a-aaaa-4e53bada526f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RestructuringCostAndReserveLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_401c27eb-755c-443c-a559-8f648f9fd12d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RestructuringCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_cf6de57d-9974-4f5a-aaaa-4e53bada526f" xlink:to="loc_us-gaap_RestructuringCharges_401c27eb-755c-443c-a559-8f648f9fd12d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserve_5b6ae1e4-7823-4b82-bc94-5bc8b13386f2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RestructuringReserve"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_cf6de57d-9974-4f5a-aaaa-4e53bada526f" xlink:to="loc_us-gaap_RestructuringReserve_5b6ae1e4-7823-4b82-bc94-5bc8b13386f2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_dbd87b62-9123-47ae-a2ca-d4deac5e3c6e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_cf6de57d-9974-4f5a-aaaa-4e53bada526f" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_dbd87b62-9123-47ae-a2ca-d4deac5e3c6e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveAxis_501deae9-7f1e-46ff-9c34-3bd1f7fd1b70" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RestructuringCostAndReserveAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_dbd87b62-9123-47ae-a2ca-d4deac5e3c6e" xlink:to="loc_us-gaap_RestructuringCostAndReserveAxis_501deae9-7f1e-46ff-9c34-3bd1f7fd1b70" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_501deae9-7f1e-46ff-9c34-3bd1f7fd1b70_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_501deae9-7f1e-46ff-9c34-3bd1f7fd1b70" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_501deae9-7f1e-46ff-9c34-3bd1f7fd1b70_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_1d181cec-8613-4982-b6f3-5fea35dad20a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_501deae9-7f1e-46ff-9c34-3bd1f7fd1b70" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_1d181cec-8613-4982-b6f3-5fea35dad20a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeSeveranceMember_094fb2a7-4853-4739-bc38-e012af5308b0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EmployeeSeveranceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_1d181cec-8613-4982-b6f3-5fea35dad20a" xlink:to="loc_us-gaap_EmployeeSeveranceMember_094fb2a7-4853-4739-bc38-e012af5308b0" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/SeveranceandRelatedChargesScheduleofSeveranceCostsDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#SeveranceandRelatedChargesScheduleofSeveranceCostsDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/SeveranceandRelatedChargesScheduleofSeveranceCostsDetails" xlink:type="extended" id="if80a7a8f8c82429798444d8a986d8f1f_SeveranceandRelatedChargesScheduleofSeveranceCostsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_33f31b4a-5975-4095-968b-0a1f1c451e75" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RestructuringCostAndReserveLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_b01193fa-504c-45b0-b50e-f953b39d1767" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RestructuringCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_33f31b4a-5975-4095-968b-0a1f1c451e75" xlink:to="loc_us-gaap_RestructuringCharges_b01193fa-504c-45b0-b50e-f953b39d1767" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_888c989c-120e-4185-94bd-fb6f58b09abb" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_33f31b4a-5975-4095-968b-0a1f1c451e75" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_888c989c-120e-4185-94bd-fb6f58b09abb" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_a41326bb-1a64-4b42-a2d8-afadbc8de213" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_888c989c-120e-4185-94bd-fb6f58b09abb" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_a41326bb-1a64-4b42-a2d8-afadbc8de213" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_a41326bb-1a64-4b42-a2d8-afadbc8de213_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_a41326bb-1a64-4b42-a2d8-afadbc8de213" xlink:to="loc_us-gaap_SegmentDomain_a41326bb-1a64-4b42-a2d8-afadbc8de213_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_ea3aef69-f4d6-4583-a340-fa64fd844e29" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_a41326bb-1a64-4b42-a2d8-afadbc8de213" xlink:to="loc_us-gaap_SegmentDomain_ea3aef69-f4d6-4583-a340-fa64fd844e29" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_DisplayandAdjacentMarketsMember_bb957798-3f62-406c-b243-929123b687e5" xlink:href="amat-20211031.xsd#amat_DisplayandAdjacentMarketsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_ea3aef69-f4d6-4583-a340-fa64fd844e29" xlink:to="loc_amat_DisplayandAdjacentMarketsMember_bb957798-3f62-406c-b243-929123b687e5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_CorporateAndReconcilingItemsMember_86b29e05-e566-4aa3-83fc-516bf1234d24" xlink:href="amat-20211031.xsd#amat_CorporateAndReconcilingItemsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_ea3aef69-f4d6-4583-a340-fa64fd844e29" xlink:to="loc_amat_CorporateAndReconcilingItemsMember_86b29e05-e566-4aa3-83fc-516bf1234d24" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/SeveranceandRelatedChargesScheduleofchangesinseveranceandrelatedchargesreservesDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#SeveranceandRelatedChargesScheduleofchangesinseveranceandrelatedchargesreservesDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/SeveranceandRelatedChargesScheduleofchangesinseveranceandrelatedchargesreservesDetails" xlink:type="extended" id="i8745a4f93a304c709fb26d00bf227263_SeveranceandRelatedChargesScheduleofchangesinseveranceandrelatedchargesreservesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_5963fb7f-ad62-483c-b977-bef9e8b3eb32" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RestructuringCostAndReserveLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserveRollForward_b0548a51-11cc-4073-84f2-516927df5928" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RestructuringReserveRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_5963fb7f-ad62-483c-b977-bef9e8b3eb32" xlink:to="loc_us-gaap_RestructuringReserveRollForward_b0548a51-11cc-4073-84f2-516927df5928" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserve_22c30bf5-25e0-4bd0-94de-47f0777696b2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RestructuringReserve"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringReserveRollForward_b0548a51-11cc-4073-84f2-516927df5928" xlink:to="loc_us-gaap_RestructuringReserve_22c30bf5-25e0-4bd0-94de-47f0777696b2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_77096150-ef80-4967-baa1-c6b22f7db851" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RestructuringCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringReserveRollForward_b0548a51-11cc-4073-84f2-516927df5928" xlink:to="loc_us-gaap_RestructuringCharges_77096150-ef80-4967-baa1-c6b22f7db851" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserveAccrualAdjustment1_536ef7d9-74b2-4203-a06b-d01b427973a0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RestructuringReserveAccrualAdjustment1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringReserveRollForward_b0548a51-11cc-4073-84f2-516927df5928" xlink:to="loc_us-gaap_RestructuringReserveAccrualAdjustment1_536ef7d9-74b2-4203-a06b-d01b427973a0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRestructuring_07c25145-5e86-4ea1-8fca-254eb17521c0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsForRestructuring"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringReserveRollForward_b0548a51-11cc-4073-84f2-516927df5928" xlink:to="loc_us-gaap_PaymentsForRestructuring_07c25145-5e86-4ea1-8fca-254eb17521c0" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserve_fe119acc-55ef-415b-987a-5aab23e9b493" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RestructuringReserve"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_8af34f92-d468-4344-a12f-cd1dc4d4b1c1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_5963fb7f-ad62-483c-b977-bef9e8b3eb32" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_8af34f92-d468-4344-a12f-cd1dc4d4b1c1" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveAxis_62ed6903-54c4-4f63-b975-fc19eaada505" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RestructuringCostAndReserveAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_8af34f92-d468-4344-a12f-cd1dc4d4b1c1" xlink:to="loc_us-gaap_RestructuringCostAndReserveAxis_62ed6903-54c4-4f63-b975-fc19eaada505" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_62ed6903-54c4-4f63-b975-fc19eaada505_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_62ed6903-54c4-4f63-b975-fc19eaada505" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_62ed6903-54c4-4f63-b975-fc19eaada505_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_a6242f47-bb5e-4dd6-ba8c-406f39b673d4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_62ed6903-54c4-4f63-b975-fc19eaada505" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_a6242f47-bb5e-4dd6-ba8c-406f39b673d4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeSeveranceMember_1383f9f4-30c5-47a6-a2f4-75efae6f0158" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EmployeeSeveranceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_a6242f47-bb5e-4dd6-ba8c-406f39b673d4" xlink:to="loc_us-gaap_EmployeeSeveranceMember_1383f9f4-30c5-47a6-a2f4-75efae6f0158" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/StockholdersEquityComprehensiveIncomeandShareBasedCompensationAccumulatedOtherComprehensiveIncomeLossDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#StockholdersEquityComprehensiveIncomeandShareBasedCompensationAccumulatedOtherComprehensiveIncomeLossDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/StockholdersEquityComprehensiveIncomeandShareBasedCompensationAccumulatedOtherComprehensiveIncomeLossDetails" xlink:type="extended" id="i1e4071df87e4455e8ee26392cd804766_StockholdersEquityComprehensiveIncomeandShareBasedCompensationAccumulatedOtherComprehensiveIncomeLossDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_2583313b-d8e6-49eb-941a-12471e72fcd8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_0e8701d5-cc37-416a-98cd-38d366345751" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AOCIAttributableToParentNetOfTaxRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_2583313b-d8e6-49eb-941a-12471e72fcd8" xlink:to="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_0e8701d5-cc37-416a-98cd-38d366345751" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_4b433f81-4efe-47d9-bda3-24aa6522f9a6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_0e8701d5-cc37-416a-98cd-38d366345751" xlink:to="loc_us-gaap_StockholdersEquity_4b433f81-4efe-47d9-bda3-24aa6522f9a6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent_08f4d7ae-2392-4bc7-b1c9-3b95743def04" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_0e8701d5-cc37-416a-98cd-38d366345751" xlink:to="loc_us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent_08f4d7ae-2392-4bc7-b1c9-3b95743def04" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent_b3b1ac6e-0ad6-414d-9dd5-bd848b5438d5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_0e8701d5-cc37-416a-98cd-38d366345751" xlink:to="loc_us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent_b3b1ac6e-0ad6-414d-9dd5-bd848b5438d5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_ff5f62dc-e5f2-4b82-859b-c2d95aa09480" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_0e8701d5-cc37-416a-98cd-38d366345751" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_ff5f62dc-e5f2-4b82-859b-c2d95aa09480" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_4e27f95e-c4dc-40e9-85f1-9a5e18eb856f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_887e4b15-cfff-4cf1-b413-9d29bc784b50" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_2583313b-d8e6-49eb-941a-12471e72fcd8" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_887e4b15-cfff-4cf1-b413-9d29bc784b50" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_f8b1ddd3-b03b-45bc-85ba-cccd4ec7b458" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_887e4b15-cfff-4cf1-b413-9d29bc784b50" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_f8b1ddd3-b03b-45bc-85ba-cccd4ec7b458" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_f8b1ddd3-b03b-45bc-85ba-cccd4ec7b458_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_f8b1ddd3-b03b-45bc-85ba-cccd4ec7b458" xlink:to="loc_us-gaap_EquityComponentDomain_f8b1ddd3-b03b-45bc-85ba-cccd4ec7b458_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_77a09602-3637-4266-b482-29b3be0b405d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_f8b1ddd3-b03b-45bc-85ba-cccd4ec7b458" xlink:to="loc_us-gaap_EquityComponentDomain_77a09602-3637-4266-b482-29b3be0b405d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_b66b72be-73d2-4c37-87ec-a758d8240985" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_77a09602-3637-4266-b482-29b3be0b405d" xlink:to="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_b66b72be-73d2-4c37-87ec-a758d8240985" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember_24c462de-5533-49b1-9f0b-788997d0ab48" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_77a09602-3637-4266-b482-29b3be0b405d" xlink:to="loc_us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember_24c462de-5533-49b1-9f0b-788997d0ab48" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_0555c2f1-0472-4afb-b156-b29fd44c55e7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_77a09602-3637-4266-b482-29b3be0b405d" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_0555c2f1-0472-4afb-b156-b29fd44c55e7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedTranslationAdjustmentMember_3571a2c0-ec9e-46d8-a3ff-0634a4c0e932" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedTranslationAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_77a09602-3637-4266-b482-29b3be0b405d" xlink:to="loc_us-gaap_AccumulatedTranslationAdjustmentMember_3571a2c0-ec9e-46d8-a3ff-0634a4c0e932" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_cbd86b0a-b736-4876-80a1-1bb1ebb63592" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_77a09602-3637-4266-b482-29b3be0b405d" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_cbd86b0a-b736-4876-80a1-1bb1ebb63592" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_623ab93b-7a85-45aa-b584-1c817a60cb64" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_887e4b15-cfff-4cf1-b413-9d29bc784b50" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_623ab93b-7a85-45aa-b584-1c817a60cb64" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_623ab93b-7a85-45aa-b584-1c817a60cb64_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_623ab93b-7a85-45aa-b584-1c817a60cb64" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_623ab93b-7a85-45aa-b584-1c817a60cb64_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_5c7a0d61-3d35-43c9-b657-9e9ec8887e77" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_623ab93b-7a85-45aa-b584-1c817a60cb64" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_5c7a0d61-3d35-43c9-b657-9e9ec8887e77" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_c7578993-8046-4ea5-822b-385fff6065d0" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_5c7a0d61-3d35-43c9-b657-9e9ec8887e77" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_c7578993-8046-4ea5-822b-385fff6065d0" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/StockholdersEquityComprehensiveIncomeandShareBasedCompensationNarrativeDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#StockholdersEquityComprehensiveIncomeandShareBasedCompensationNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/StockholdersEquityComprehensiveIncomeandShareBasedCompensationNarrativeDetails" xlink:type="extended" id="i99c85ca47c9a4f229a25618044156ffb_StockholdersEquityComprehensiveIncomeandShareBasedCompensationNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_amat_EquityLineItems_06e4d66c-e5ef-4b11-90c8-e35ce3ecc7ed" xlink:href="amat-20211031.xsd#amat_EquityLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax_1cecf446-6a8e-434f-a1e7-f6eac494449b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_amat_EquityLineItems_06e4d66c-e5ef-4b11-90c8-e35ce3ecc7ed" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax_1cecf446-6a8e-434f-a1e7-f6eac494449b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_StockRepurchaseProgramAbstract_1c76ef28-b76f-4870-97ed-39896fd7a9ff" xlink:href="amat-20211031.xsd#amat_StockRepurchaseProgramAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_amat_EquityLineItems_06e4d66c-e5ef-4b11-90c8-e35ce3ecc7ed" xlink:to="loc_amat_StockRepurchaseProgramAbstract_1c76ef28-b76f-4870-97ed-39896fd7a9ff" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchaseProgramAuthorizedAmount1_86c9e341-3353-4d0e-97d0-f78fdda0892f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockRepurchaseProgramAuthorizedAmount1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_amat_StockRepurchaseProgramAbstract_1c76ef28-b76f-4870-97ed-39896fd7a9ff" xlink:to="loc_us-gaap_StockRepurchaseProgramAuthorizedAmount1_86c9e341-3353-4d0e-97d0-f78fdda0892f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_c0df5df8-5a27-433b-aa0c-9307f59db945" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_amat_StockRepurchaseProgramAbstract_1c76ef28-b76f-4870-97ed-39896fd7a9ff" xlink:to="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_c0df5df8-5a27-433b-aa0c-9307f59db945" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsAbstract_8a23bade-afd1-42d2-95b6-fdafa67bf2f3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DividendsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_amat_EquityLineItems_06e4d66c-e5ef-4b11-90c8-e35ce3ecc7ed" xlink:to="loc_us-gaap_DividendsAbstract_8a23bade-afd1-42d2-95b6-fdafa67bf2f3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockDividendsPerShareDeclared_9a12507a-4d03-4402-a35c-8b74f1ecb83f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommonStockDividendsPerShareDeclared"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DividendsAbstract_8a23bade-afd1-42d2-95b6-fdafa67bf2f3" xlink:to="loc_us-gaap_CommonStockDividendsPerShareDeclared_9a12507a-4d03-4402-a35c-8b74f1ecb83f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDividends_d2e88beb-be07-48fe-b49a-a611753237a4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsOfDividends"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DividendsAbstract_8a23bade-afd1-42d2-95b6-fdafa67bf2f3" xlink:to="loc_us-gaap_PaymentsOfDividends_d2e88beb-be07-48fe-b49a-a611753237a4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationAbstract_52fe9f19-2ebf-484e-b699-4130856bf3b6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_amat_EquityLineItems_06e4d66c-e5ef-4b11-90c8-e35ce3ecc7ed" xlink:to="loc_us-gaap_ShareBasedCompensationAbstract_52fe9f19-2ebf-484e-b699-4130856bf3b6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_CommonStockCapitalSharesReservedForFutureIssuanceIncrease_70be6db1-426d-4187-9b60-4ceba60a718e" xlink:href="amat-20211031.xsd#amat_CommonStockCapitalSharesReservedForFutureIssuanceIncrease"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationAbstract_52fe9f19-2ebf-484e-b699-4130856bf3b6" xlink:to="loc_amat_CommonStockCapitalSharesReservedForFutureIssuanceIncrease_70be6db1-426d-4187-9b60-4ceba60a718e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_SharebasedCompensationNumberofEmployeeStockPurchasePlans_d82c1a2f-fa2b-49e7-8d75-92dca14765b5" xlink:href="amat-20211031.xsd#amat_SharebasedCompensationNumberofEmployeeStockPurchasePlans"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationAbstract_52fe9f19-2ebf-484e-b699-4130856bf3b6" xlink:to="loc_amat_SharebasedCompensationNumberofEmployeeStockPurchasePlans_d82c1a2f-fa2b-49e7-8d75-92dca14765b5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_EmployeeServiceSharebasedCompensationNonvestedAwardsPerformanceOfTotalShareholderReturnPercent_9b8f05f6-c87e-4f7e-bfe4-ed932abe6bf8" xlink:href="amat-20211031.xsd#amat_EmployeeServiceSharebasedCompensationNonvestedAwardsPerformanceOfTotalShareholderReturnPercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationAbstract_52fe9f19-2ebf-484e-b699-4130856bf3b6" xlink:to="loc_amat_EmployeeServiceSharebasedCompensationNonvestedAwardsPerformanceOfTotalShareholderReturnPercent_9b8f05f6-c87e-4f7e-bfe4-ed932abe6bf8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_0585fb27-5cfa-447d-af51-7c9af94fc7e1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationAbstract_52fe9f19-2ebf-484e-b699-4130856bf3b6" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_0585fb27-5cfa-447d-af51-7c9af94fc7e1" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_3c0887e7-251b-495e-82b1-79a24e0a6da5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationAbstract_52fe9f19-2ebf-484e-b699-4130856bf3b6" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_3c0887e7-251b-495e-82b1-79a24e0a6da5" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_2888a245-467b-4f4f-a8a7-a5e406577393" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationAbstract_52fe9f19-2ebf-484e-b699-4130856bf3b6" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_2888a245-467b-4f4f-a8a7-a5e406577393" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_StockOptionsRestrictedStockUnitsRestrictedStockPerformanceSharesAndPerformanceUnitsAbstract_88d5c910-d286-4778-af6a-27b74e71ca8d" xlink:href="amat-20211031.xsd#amat_StockOptionsRestrictedStockUnitsRestrictedStockPerformanceSharesAndPerformanceUnitsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_amat_EquityLineItems_06e4d66c-e5ef-4b11-90c8-e35ce3ecc7ed" xlink:to="loc_amat_StockOptionsRestrictedStockUnitsRestrictedStockPerformanceSharesAndPerformanceUnitsAbstract_88d5c910-d286-4778-af6a-27b74e71ca8d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_d65f38f2-f054-4670-8dff-ad8052a09874" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_amat_StockOptionsRestrictedStockUnitsRestrictedStockPerformanceSharesAndPerformanceUnitsAbstract_88d5c910-d286-4778-af6a-27b74e71ca8d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_d65f38f2-f054-4670-8dff-ad8052a09874" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_6ff172f5-07bf-4b5d-b876-b32e95b59db4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_amat_StockOptionsRestrictedStockUnitsRestrictedStockPerformanceSharesAndPerformanceUnitsAbstract_88d5c910-d286-4778-af6a-27b74e71ca8d" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_6ff172f5-07bf-4b5d-b876-b32e95b59db4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_eeac78cb-d95c-4392-ab00-fb7163d4fabc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_amat_StockOptionsRestrictedStockUnitsRestrictedStockPerformanceSharesAndPerformanceUnitsAbstract_88d5c910-d286-4778-af6a-27b74e71ca8d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_eeac78cb-d95c-4392-ab00-fb7163d4fabc" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_SharebasedCompensationArrangementbySharebasedPaymentAwardAwardMeasurementPeriod_67ed90b7-e372-45a5-be0b-81e5fa45e2bb" xlink:href="amat-20211031.xsd#amat_SharebasedCompensationArrangementbySharebasedPaymentAwardAwardMeasurementPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_amat_StockOptionsRestrictedStockUnitsRestrictedStockPerformanceSharesAndPerformanceUnitsAbstract_88d5c910-d286-4778-af6a-27b74e71ca8d" xlink:to="loc_amat_SharebasedCompensationArrangementbySharebasedPaymentAwardAwardMeasurementPeriod_67ed90b7-e372-45a5-be0b-81e5fa45e2bb" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentageOfTargetAmount_fd5affd3-fa83-44f6-b395-9f2cc1b1018c" xlink:href="amat-20211031.xsd#amat_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentageOfTargetAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_amat_StockOptionsRestrictedStockUnitsRestrictedStockPerformanceSharesAndPerformanceUnitsAbstract_88d5c910-d286-4778-af6a-27b74e71ca8d" xlink:to="loc_amat_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentageOfTargetAmount_fd5affd3-fa83-44f6-b395-9f2cc1b1018c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardMeasurementMetricRelativeWeightPercent_54361fb8-754d-4b02-bc13-b6b78a3b1f0a" xlink:href="amat-20211031.xsd#amat_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardMeasurementMetricRelativeWeightPercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_amat_StockOptionsRestrictedStockUnitsRestrictedStockPerformanceSharesAndPerformanceUnitsAbstract_88d5c910-d286-4778-af6a-27b74e71ca8d" xlink:to="loc_amat_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardMeasurementMetricRelativeWeightPercent_54361fb8-754d-4b02-bc13-b6b78a3b1f0a" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_AdditionalPerformanceBasedAwardsToBeEarnedUponCertainLevelsOfAchievement_d9766f99-b3ca-41d4-8223-c0626bafd42e" xlink:href="amat-20211031.xsd#amat_AdditionalPerformanceBasedAwardsToBeEarnedUponCertainLevelsOfAchievement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_amat_StockOptionsRestrictedStockUnitsRestrictedStockPerformanceSharesAndPerformanceUnitsAbstract_88d5c910-d286-4778-af6a-27b74e71ca8d" xlink:to="loc_amat_AdditionalPerformanceBasedAwardsToBeEarnedUponCertainLevelsOfAchievement_d9766f99-b3ca-41d4-8223-c0626bafd42e" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_EmployeeStockPurchasePlansAbstract_54603ab0-6f63-4ead-ae01-8e8c9cab0dab" xlink:href="amat-20211031.xsd#amat_EmployeeStockPurchasePlansAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_amat_EquityLineItems_06e4d66c-e5ef-4b11-90c8-e35ce3ecc7ed" xlink:to="loc_amat_EmployeeStockPurchasePlansAbstract_54603ab0-6f63-4ead-ae01-8e8c9cab0dab" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent_36f2e524-f893-41da-a709-6510e1aecd12" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_amat_EmployeeStockPurchasePlansAbstract_54603ab0-6f63-4ead-ae01-8e8c9cab0dab" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent_36f2e524-f893-41da-a709-6510e1aecd12" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_EmployeeStockPurchasePlanESPPPurchasePeriod_d68f0500-74fb-4b69-b9da-d6973fc05163" xlink:href="amat-20211031.xsd#amat_EmployeeStockPurchasePlanESPPPurchasePeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_amat_EmployeeStockPurchasePlansAbstract_54603ab0-6f63-4ead-ae01-8e8c9cab0dab" xlink:to="loc_amat_EmployeeStockPurchasePlanESPPPurchasePeriod_d68f0500-74fb-4b69-b9da-d6973fc05163" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans_327712f9-0436-4301-aa67-27c8b2664e0c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_amat_EmployeeStockPurchasePlansAbstract_54603ab0-6f63-4ead-ae01-8e8c9cab0dab" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans_327712f9-0436-4301-aa67-27c8b2664e0c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_EquityTable_5f7a5a35-538a-45a4-8cf0-121f8a8fb2e0" xlink:href="amat-20211031.xsd#amat_EquityTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_amat_EquityLineItems_06e4d66c-e5ef-4b11-90c8-e35ce3ecc7ed" xlink:to="loc_amat_EquityTable_5f7a5a35-538a-45a4-8cf0-121f8a8fb2e0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_ed1fed1d-8ad5-4ec8-af58-ac097d27294a" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_amat_EquityTable_5f7a5a35-538a-45a4-8cf0-121f8a8fb2e0" xlink:to="loc_srt_StatementGeographicalAxis_ed1fed1d-8ad5-4ec8-af58-ac097d27294a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_ed1fed1d-8ad5-4ec8-af58-ac097d27294a_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_ed1fed1d-8ad5-4ec8-af58-ac097d27294a" xlink:to="loc_srt_SegmentGeographicalDomain_ed1fed1d-8ad5-4ec8-af58-ac097d27294a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_e28fc474-586b-4051-a88f-1fb14f44f391" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_ed1fed1d-8ad5-4ec8-af58-ac097d27294a" xlink:to="loc_srt_SegmentGeographicalDomain_e28fc474-586b-4051-a88f-1fb14f44f391" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_c8d0e127-9e49-4cf4-914f-1883a3b2578a" xlink:href="https://xbrl.sec.gov/country/2021/country-2021.xsd#country_US"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_e28fc474-586b-4051-a88f-1fb14f44f391" xlink:to="loc_country_US_c8d0e127-9e49-4cf4-914f-1883a3b2578a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonUsMember_a6f3be82-36fa-46c0-ad9f-71fb290c1f6e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NonUsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_e28fc474-586b-4051-a88f-1fb14f44f391" xlink:to="loc_us-gaap_NonUsMember_a6f3be82-36fa-46c0-ad9f-71fb290c1f6e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsidiarySaleOfStockAxis_69dbc890-c98b-4740-bdb9-34783bc7ea94" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsidiarySaleOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_amat_EquityTable_5f7a5a35-538a-45a4-8cf0-121f8a8fb2e0" xlink:to="loc_us-gaap_SubsidiarySaleOfStockAxis_69dbc890-c98b-4740-bdb9-34783bc7ea94" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_69dbc890-c98b-4740-bdb9-34783bc7ea94_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_69dbc890-c98b-4740-bdb9-34783bc7ea94" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_69dbc890-c98b-4740-bdb9-34783bc7ea94_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_0b018761-9252-4dc2-9c43-ba9e4bd0ac35" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_69dbc890-c98b-4740-bdb9-34783bc7ea94" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_0b018761-9252-4dc2-9c43-ba9e4bd0ac35" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockMember_4f304cc3-eb5d-422e-bea5-8027c7bc29fe" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EmployeeStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleOfStockNameOfTransactionDomain_0b018761-9252-4dc2-9c43-ba9e4bd0ac35" xlink:to="loc_us-gaap_EmployeeStockMember_4f304cc3-eb5d-422e-bea5-8027c7bc29fe" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_d1f9749c-b447-48bc-8c9b-999cc0474a75" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_amat_EquityTable_5f7a5a35-538a-45a4-8cf0-121f8a8fb2e0" xlink:to="loc_us-gaap_AwardTypeAxis_d1f9749c-b447-48bc-8c9b-999cc0474a75" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_d1f9749c-b447-48bc-8c9b-999cc0474a75_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_d1f9749c-b447-48bc-8c9b-999cc0474a75" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_d1f9749c-b447-48bc-8c9b-999cc0474a75_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_3521ffd5-52b9-4aeb-ad0d-c1650fea2d60" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_d1f9749c-b447-48bc-8c9b-999cc0474a75" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_3521ffd5-52b9-4aeb-ad0d-c1650fea2d60" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockMember_888e2fc7-4a7e-4a5e-8c21-387a66f4b3c3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EmployeeStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_3521ffd5-52b9-4aeb-ad0d-c1650fea2d60" xlink:to="loc_us-gaap_EmployeeStockMember_888e2fc7-4a7e-4a5e-8c21-387a66f4b3c3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockOptionMember_81df4242-3043-44fd-ac39-7f938abf2d60" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EmployeeStockOptionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_3521ffd5-52b9-4aeb-ad0d-c1650fea2d60" xlink:to="loc_us-gaap_EmployeeStockOptionMember_81df4242-3043-44fd-ac39-7f938abf2d60" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PerformanceSharesMember_9afc3f24-4dd1-453f-a932-f69b3463fe8f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PerformanceSharesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_3521ffd5-52b9-4aeb-ad0d-c1650fea2d60" xlink:to="loc_us-gaap_PerformanceSharesMember_9afc3f24-4dd1-453f-a932-f69b3463fe8f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_RestrictedStockUnitsRestrictedStockPerformanceSharesandPerformanceUnitsMember_21eef735-e835-40f0-a3d6-fb07651ea5bd" xlink:href="amat-20211031.xsd#amat_RestrictedStockUnitsRestrictedStockPerformanceSharesandPerformanceUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_3521ffd5-52b9-4aeb-ad0d-c1650fea2d60" xlink:to="loc_amat_RestrictedStockUnitsRestrictedStockPerformanceSharesandPerformanceUnitsMember_21eef735-e835-40f0-a3d6-fb07651ea5bd" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_e36443ba-647a-4d54-a129-c9a91797f818" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_amat_EquityTable_5f7a5a35-538a-45a4-8cf0-121f8a8fb2e0" xlink:to="loc_srt_RangeAxis_e36443ba-647a-4d54-a129-c9a91797f818" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_e36443ba-647a-4d54-a129-c9a91797f818_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_e36443ba-647a-4d54-a129-c9a91797f818" xlink:to="loc_srt_RangeMember_e36443ba-647a-4d54-a129-c9a91797f818_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_209abfec-ce15-433b-a2b2-d9d4cf6eeaee" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_e36443ba-647a-4d54-a129-c9a91797f818" xlink:to="loc_srt_RangeMember_209abfec-ce15-433b-a2b2-d9d4cf6eeaee" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_82f49658-1013-4ef7-8190-5062aa09324f" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_209abfec-ce15-433b-a2b2-d9d4cf6eeaee" xlink:to="loc_srt_MinimumMember_82f49658-1013-4ef7-8190-5062aa09324f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_b09c8503-ad16-469b-aea5-de8a8f45e4b5" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_209abfec-ce15-433b-a2b2-d9d4cf6eeaee" xlink:to="loc_srt_MaximumMember_b09c8503-ad16-469b-aea5-de8a8f45e4b5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameAxis_ddae17dc-d0fe-4e3c-a714-5a92d66006ea" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PlanNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_amat_EquityTable_5f7a5a35-538a-45a4-8cf0-121f8a8fb2e0" xlink:to="loc_us-gaap_PlanNameAxis_ddae17dc-d0fe-4e3c-a714-5a92d66006ea" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_ddae17dc-d0fe-4e3c-a714-5a92d66006ea_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_ddae17dc-d0fe-4e3c-a714-5a92d66006ea" xlink:to="loc_us-gaap_PlanNameDomain_ddae17dc-d0fe-4e3c-a714-5a92d66006ea_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_bc4c56d6-ea79-46f3-9eaa-3b29aaa62532" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_ddae17dc-d0fe-4e3c-a714-5a92d66006ea" xlink:to="loc_us-gaap_PlanNameDomain_bc4c56d6-ea79-46f3-9eaa-3b29aaa62532" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_EmployeeStockIncentivePlanMember_44c80776-3b11-44ff-9d26-b9b120a8e560" xlink:href="amat-20211031.xsd#amat_EmployeeStockIncentivePlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_bc4c56d6-ea79-46f3-9eaa-3b29aaa62532" xlink:to="loc_amat_EmployeeStockIncentivePlanMember_44c80776-3b11-44ff-9d26-b9b120a8e560" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_EmployeeStockPurchasePlanMember_75347eba-f695-4e20-ad5d-e5f18ed50aab" xlink:href="amat-20211031.xsd#amat_EmployeeStockPurchasePlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_bc4c56d6-ea79-46f3-9eaa-3b29aaa62532" xlink:to="loc_amat_EmployeeStockPurchasePlanMember_75347eba-f695-4e20-ad5d-e5f18ed50aab" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_TitleOfIndividualAxis_758afb6b-125f-4f38-94a4-8755bc61a3fd" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_TitleOfIndividualAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_amat_EquityTable_5f7a5a35-538a-45a4-8cf0-121f8a8fb2e0" xlink:to="loc_srt_TitleOfIndividualAxis_758afb6b-125f-4f38-94a4-8755bc61a3fd" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_758afb6b-125f-4f38-94a4-8755bc61a3fd_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_TitleOfIndividualWithRelationshipToEntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_TitleOfIndividualAxis_758afb6b-125f-4f38-94a4-8755bc61a3fd" xlink:to="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_758afb6b-125f-4f38-94a4-8755bc61a3fd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_d8512511-3021-4547-82e3-d8823436da91" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_TitleOfIndividualWithRelationshipToEntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_TitleOfIndividualAxis_758afb6b-125f-4f38-94a4-8755bc61a3fd" xlink:to="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_d8512511-3021-4547-82e3-d8823436da91" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ExecutiveOfficerMember_dcb549db-199b-4fdd-8968-3cedfde72712" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ExecutiveOfficerMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_d8512511-3021-4547-82e3-d8823436da91" xlink:to="loc_srt_ExecutiveOfficerMember_dcb549db-199b-4fdd-8968-3cedfde72712" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/StockholdersEquityComprehensiveIncomeandShareBasedCompensationEffectofSharebasedCompensationDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#StockholdersEquityComprehensiveIncomeandShareBasedCompensationEffectofSharebasedCompensationDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/StockholdersEquityComprehensiveIncomeandShareBasedCompensationEffectofSharebasedCompensationDetails" xlink:type="extended" id="i2b900be420e6443c8bf1bfe0301258a0_StockholdersEquityComprehensiveIncomeandShareBasedCompensationEffectofSharebasedCompensationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_6dc5342f-3197-4e4e-b95f-8ccbee999d0c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_ff84c2bf-8d36-4b0c-905e-969368b455aa" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_6dc5342f-3197-4e4e-b95f-8ccbee999d0c" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_ff84c2bf-8d36-4b0c-905e-969368b455aa" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_2783fb4b-9c8b-4ee0-9080-da386c58a7ed" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_6dc5342f-3197-4e4e-b95f-8ccbee999d0c" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_2783fb4b-9c8b-4ee0-9080-da386c58a7ed" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_b3dbb7cc-4795-448a-a188-6e26399bc1da" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_6dc5342f-3197-4e4e-b95f-8ccbee999d0c" xlink:to="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_b3dbb7cc-4795-448a-a188-6e26399bc1da" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_db2933ed-cc6d-4a08-bd55-f48f90702153" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeStatementLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_b3dbb7cc-4795-448a-a188-6e26399bc1da" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_db2933ed-cc6d-4a08-bd55-f48f90702153" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_db2933ed-cc6d-4a08-bd55-f48f90702153_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_db2933ed-cc6d-4a08-bd55-f48f90702153" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_db2933ed-cc6d-4a08-bd55-f48f90702153_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_8b4148f1-f881-4601-8a2a-7e69ec6c876f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_db2933ed-cc6d-4a08-bd55-f48f90702153" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_8b4148f1-f881-4601-8a2a-7e69ec6c876f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfSalesMember_69f4e030-c497-4996-b709-6de3d794a779" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CostOfSalesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_8b4148f1-f881-4601-8a2a-7e69ec6c876f" xlink:to="loc_us-gaap_CostOfSalesMember_69f4e030-c497-4996-b709-6de3d794a779" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpenseMember_eaeb2194-6387-4671-b489-a59dcd5e6bc0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ResearchAndDevelopmentExpenseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_8b4148f1-f881-4601-8a2a-7e69ec6c876f" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpenseMember_eaeb2194-6387-4671-b489-a59dcd5e6bc0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingAndMarketingExpenseMember_509cc09f-5a68-4878-a94d-d405704dc085" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SellingAndMarketingExpenseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_8b4148f1-f881-4601-8a2a-7e69ec6c876f" xlink:to="loc_us-gaap_SellingAndMarketingExpenseMember_509cc09f-5a68-4878-a94d-d405704dc085" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpenseMember_2c27fe55-a68a-4e45-9cdd-4e4813dc39fd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GeneralAndAdministrativeExpenseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_8b4148f1-f881-4601-8a2a-7e69ec6c876f" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpenseMember_2c27fe55-a68a-4e45-9cdd-4e4813dc39fd" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/StockholdersEquityComprehensiveIncomeandShareBasedCompensationRestrictedStockUnitsRestrictedStockPerformanceSharesandPerformanceUnitsDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#StockholdersEquityComprehensiveIncomeandShareBasedCompensationRestrictedStockUnitsRestrictedStockPerformanceSharesandPerformanceUnitsDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/StockholdersEquityComprehensiveIncomeandShareBasedCompensationRestrictedStockUnitsRestrictedStockPerformanceSharesandPerformanceUnitsDetails" xlink:type="extended" id="i1937885d1fe2426186f1ecf6e8e042f3_StockholdersEquityComprehensiveIncomeandShareBasedCompensationRestrictedStockUnitsRestrictedStockPerformanceSharesandPerformanceUnitsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_ef2284af-3a60-4b3f-9c65-a87d25d6e191" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_7027f5af-8a19-4c5c-9be2-ff0eced78cd4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_ef2284af-3a60-4b3f-9c65-a87d25d6e191" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_7027f5af-8a19-4c5c-9be2-ff0eced78cd4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_d0cb23cb-9788-4799-ba7f-dda4e3f9e93a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_7027f5af-8a19-4c5c-9be2-ff0eced78cd4" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_d0cb23cb-9788-4799-ba7f-dda4e3f9e93a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_8b5f1c11-5986-4db6-b5cf-79e626fd4c57" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_7027f5af-8a19-4c5c-9be2-ff0eced78cd4" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_8b5f1c11-5986-4db6-b5cf-79e626fd4c57" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_b0fbd353-be54-4912-aedf-c0131ca7110c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_7027f5af-8a19-4c5c-9be2-ff0eced78cd4" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_b0fbd353-be54-4912-aedf-c0131ca7110c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_99cd1d36-c34c-4675-a045-340caeaebc91" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_7027f5af-8a19-4c5c-9be2-ff0eced78cd4" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_99cd1d36-c34c-4675-a045-340caeaebc91" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_54c51d02-35c4-4ce1-ba24-4417c1481c54" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndExpectedToVestNumber_e548ef87-c1f9-403a-8c3e-ae10a112ae87" xlink:href="amat-20211031.xsd#amat_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndExpectedToVestNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_ef2284af-3a60-4b3f-9c65-a87d25d6e191" xlink:to="loc_amat_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndExpectedToVestNumber_e548ef87-c1f9-403a-8c3e-ae10a112ae87" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_45335be6-673e-4f63-8776-dd806b23f452" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_ef2284af-3a60-4b3f-9c65-a87d25d6e191" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_45335be6-673e-4f63-8776-dd806b23f452" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_c4cdef02-e19c-408f-87e5-b517ffd8be83" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_45335be6-673e-4f63-8776-dd806b23f452" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_c4cdef02-e19c-408f-87e5-b517ffd8be83" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_ca8d989f-f391-47a5-9840-7feaf4d1665d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_45335be6-673e-4f63-8776-dd806b23f452" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_ca8d989f-f391-47a5-9840-7feaf4d1665d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_0af953f8-a3a2-4f7c-8256-54e794ebb3fd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_45335be6-673e-4f63-8776-dd806b23f452" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_0af953f8-a3a2-4f7c-8256-54e794ebb3fd" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_967c1127-00a6-4823-81b5-94a0b4d1cd96" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_45335be6-673e-4f63-8776-dd806b23f452" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_967c1127-00a6-4823-81b5-94a0b4d1cd96" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_a9acba89-58c9-493b-9a2e-68ddb45981b4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndExpectedToVestFairValue_87441a96-24ef-4775-9f03-5941d3c9357f" xlink:href="amat-20211031.xsd#amat_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndExpectedToVestFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_ef2284af-3a60-4b3f-9c65-a87d25d6e191" xlink:to="loc_amat_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndExpectedToVestFairValue_87441a96-24ef-4775-9f03-5941d3c9357f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_ContractualTermAbstract_e9d68e95-7fab-4b04-b589-9d4b3f619690" xlink:href="amat-20211031.xsd#amat_ContractualTermAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_ef2284af-3a60-4b3f-9c65-a87d25d6e191" xlink:to="loc_amat_ContractualTermAbstract_e9d68e95-7fab-4b04-b589-9d4b3f619690" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms_d8856312-0079-4a38-8c05-a2075ad1d87a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_amat_ContractualTermAbstract_e9d68e95-7fab-4b04-b589-9d4b3f619690" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms_d8856312-0079-4a38-8c05-a2075ad1d87a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndExpectedToVestWeightedAverageRemainingContractualTerm_1e72227b-e008-4071-b43b-449171217c6f" xlink:href="amat-20211031.xsd#amat_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndExpectedToVestWeightedAverageRemainingContractualTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_amat_ContractualTermAbstract_e9d68e95-7fab-4b04-b589-9d4b3f619690" xlink:to="loc_amat_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndExpectedToVestWeightedAverageRemainingContractualTerm_1e72227b-e008-4071-b43b-449171217c6f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_AggregateIntrinsicValueAbstract_09895674-cb7f-41af-a713-83e401e9ed96" xlink:href="amat-20211031.xsd#amat_AggregateIntrinsicValueAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_ef2284af-3a60-4b3f-9c65-a87d25d6e191" xlink:to="loc_amat_AggregateIntrinsicValueAbstract_09895674-cb7f-41af-a713-83e401e9ed96" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsIntrinsicValue_5cc26f16-342b-4406-aa07-bb7c7fcec443" xlink:href="amat-20211031.xsd#amat_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsIntrinsicValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_amat_AggregateIntrinsicValueAbstract_09895674-cb7f-41af-a713-83e401e9ed96" xlink:to="loc_amat_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsIntrinsicValue_5cc26f16-342b-4406-aa07-bb7c7fcec443" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndExpectedToVestAggregateIntrinsicValue_c8f1dc72-9b58-45c7-a307-498bd5cf5721" xlink:href="amat-20211031.xsd#amat_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndExpectedToVestAggregateIntrinsicValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_amat_AggregateIntrinsicValueAbstract_09895674-cb7f-41af-a713-83e401e9ed96" xlink:to="loc_amat_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndExpectedToVestAggregateIntrinsicValue_c8f1dc72-9b58-45c7-a307-498bd5cf5721" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_bec8fe13-4042-4597-bc12-15e38791d6a8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_ef2284af-3a60-4b3f-9c65-a87d25d6e191" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_bec8fe13-4042-4597-bc12-15e38791d6a8" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_50f63dd8-c34a-4b4b-b531-97713710483d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_bec8fe13-4042-4597-bc12-15e38791d6a8" xlink:to="loc_us-gaap_AwardTypeAxis_50f63dd8-c34a-4b4b-b531-97713710483d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_50f63dd8-c34a-4b4b-b531-97713710483d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_50f63dd8-c34a-4b4b-b531-97713710483d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_50f63dd8-c34a-4b4b-b531-97713710483d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_30d79c36-746e-4565-b495-31a06196e5fd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_50f63dd8-c34a-4b4b-b531-97713710483d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_30d79c36-746e-4565-b495-31a06196e5fd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_RestrictedStockUnitsRestrictedStockPerformanceSharesandPerformanceUnitsMember_da7c94c2-8217-4971-a918-30ab095135e9" xlink:href="amat-20211031.xsd#amat_RestrictedStockUnitsRestrictedStockPerformanceSharesandPerformanceUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_30d79c36-746e-4565-b495-31a06196e5fd" xlink:to="loc_amat_RestrictedStockUnitsRestrictedStockPerformanceSharesandPerformanceUnitsMember_da7c94c2-8217-4971-a918-30ab095135e9" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/StockholdersEquityComprehensiveIncomeandShareBasedCompensationESPPFairValueAssumptionsDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#StockholdersEquityComprehensiveIncomeandShareBasedCompensationESPPFairValueAssumptionsDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/StockholdersEquityComprehensiveIncomeandShareBasedCompensationESPPFairValueAssumptionsDetails" xlink:type="extended" id="i9c935cc31498428483a634c6fa397288_StockholdersEquityComprehensiveIncomeandShareBasedCompensationESPPFairValueAssumptionsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_121e48b1-5d84-47e5-9a76-473cdbb74e41" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_3fe84731-ab96-4289-86b9-197ac650f4f5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_121e48b1-5d84-47e5-9a76-473cdbb74e41" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_3fe84731-ab96-4289-86b9-197ac650f4f5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_fcf8d6a7-76fd-4065-8506-5c4a39d8b56d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_3fe84731-ab96-4289-86b9-197ac650f4f5" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_fcf8d6a7-76fd-4065-8506-5c4a39d8b56d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_2a67a97e-9c18-4203-aff3-1ec5a5d25c24" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_3fe84731-ab96-4289-86b9-197ac650f4f5" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_2a67a97e-9c18-4203-aff3-1ec5a5d25c24" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_8877ac13-6d36-4caa-b052-a3d9ef5c64bc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_3fe84731-ab96-4289-86b9-197ac650f4f5" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_8877ac13-6d36-4caa-b052-a3d9ef5c64bc" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_b8a8766a-c2c1-4fb6-b0c2-4151651eade9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_3fe84731-ab96-4289-86b9-197ac650f4f5" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_b8a8766a-c2c1-4fb6-b0c2-4151651eade9" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_WeightedAverageEstimatedFairValueOfPurchaseRightsUnderEspp_cbbe861c-4583-475d-8442-fc7592c0f2f5" xlink:href="amat-20211031.xsd#amat_WeightedAverageEstimatedFairValueOfPurchaseRightsUnderEspp"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_3fe84731-ab96-4289-86b9-197ac650f4f5" xlink:to="loc_amat_WeightedAverageEstimatedFairValueOfPurchaseRightsUnderEspp_cbbe861c-4583-475d-8442-fc7592c0f2f5" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_fb6e0309-52c4-4ff5-9054-d0ef1f784143" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_121e48b1-5d84-47e5-9a76-473cdbb74e41" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_fb6e0309-52c4-4ff5-9054-d0ef1f784143" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameAxis_a1a3634d-39be-401a-89ca-6e77d226a041" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PlanNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_fb6e0309-52c4-4ff5-9054-d0ef1f784143" xlink:to="loc_us-gaap_PlanNameAxis_a1a3634d-39be-401a-89ca-6e77d226a041" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_a1a3634d-39be-401a-89ca-6e77d226a041_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_a1a3634d-39be-401a-89ca-6e77d226a041" xlink:to="loc_us-gaap_PlanNameDomain_a1a3634d-39be-401a-89ca-6e77d226a041_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_9fe051c0-e822-46ed-a78b-e1dca34b9ff4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_a1a3634d-39be-401a-89ca-6e77d226a041" xlink:to="loc_us-gaap_PlanNameDomain_9fe051c0-e822-46ed-a78b-e1dca34b9ff4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_EmployeeStockPurchasePlanMember_1167db40-486f-4104-bfb7-10783ef6a3fd" xlink:href="amat-20211031.xsd#amat_EmployeeStockPurchasePlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_9fe051c0-e822-46ed-a78b-e1dca34b9ff4" xlink:to="loc_amat_EmployeeStockPurchasePlanMember_1167db40-486f-4104-bfb7-10783ef6a3fd" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/EmployeeBenefitPlansNarrativeDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#EmployeeBenefitPlansNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/EmployeeBenefitPlansNarrativeDetails" xlink:type="extended" id="i21a9f8dc5bcb457b851529fa6a4f50a2_EmployeeBenefitPlansNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_07d28a47-0295-46d5-b570-96707f6693a9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_EmployeeBonusPlansAbstract_543e3300-5726-4701-bcdf-0835392fbdee" xlink:href="amat-20211031.xsd#amat_EmployeeBonusPlansAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_07d28a47-0295-46d5-b570-96707f6693a9" xlink:to="loc_amat_EmployeeBonusPlansAbstract_543e3300-5726-4701-bcdf-0835392fbdee" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_DefinedBonusPlanCostRecognized_04f926ff-841c-4c92-907b-10ad7ea77c94" xlink:href="amat-20211031.xsd#amat_DefinedBonusPlanCostRecognized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_amat_EmployeeBonusPlansAbstract_543e3300-5726-4701-bcdf-0835392fbdee" xlink:to="loc_amat_DefinedBonusPlanCostRecognized_04f926ff-841c-4c92-907b-10ad7ea77c94" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_EmployeeSavingsandRetirementPlanAbstract_af85ddea-74c7-4b16-8983-91a653002e12" xlink:href="amat-20211031.xsd#amat_EmployeeSavingsandRetirementPlanAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_07d28a47-0295-46d5-b570-96707f6693a9" xlink:to="loc_amat_EmployeeSavingsandRetirementPlanAbstract_af85ddea-74c7-4b16-8983-91a653002e12" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch_e926e797-1a90-41b6-a203-c17c71365bb6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_amat_EmployeeSavingsandRetirementPlanAbstract_af85ddea-74c7-4b16-8983-91a653002e12" xlink:to="loc_us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch_e926e797-1a90-41b6-a203-c17c71365bb6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent_a7715090-c4e9-48a6-87de-bf30d54ee200" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_amat_EmployeeSavingsandRetirementPlanAbstract_af85ddea-74c7-4b16-8983-91a653002e12" xlink:to="loc_us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent_a7715090-c4e9-48a6-87de-bf30d54ee200" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_DefinedContributionPlanEmployerMatchingContributionPercentofMatchSecondTier_7be096b5-2d25-4558-b3ff-5c419a6f3c72" xlink:href="amat-20211031.xsd#amat_DefinedContributionPlanEmployerMatchingContributionPercentofMatchSecondTier"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_amat_EmployeeSavingsandRetirementPlanAbstract_af85ddea-74c7-4b16-8983-91a653002e12" xlink:to="loc_amat_DefinedContributionPlanEmployerMatchingContributionPercentofMatchSecondTier_7be096b5-2d25-4558-b3ff-5c419a6f3c72" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_DefinedContributionPlanEmployerMatchingContributionPercentofEmployeesGrossPaySecondTier_c59c8230-174c-4fdd-81e2-860ef3463949" xlink:href="amat-20211031.xsd#amat_DefinedContributionPlanEmployerMatchingContributionPercentofEmployeesGrossPaySecondTier"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_amat_EmployeeSavingsandRetirementPlanAbstract_af85ddea-74c7-4b16-8983-91a653002e12" xlink:to="loc_amat_DefinedContributionPlanEmployerMatchingContributionPercentofEmployeesGrossPaySecondTier_c59c8230-174c-4fdd-81e2-860ef3463949" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_DefinedBenefitPlanMatchingContributionVestingPercentage_b7125b89-707a-40db-97b0-e029bd7c5279" xlink:href="amat-20211031.xsd#amat_DefinedBenefitPlanMatchingContributionVestingPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_amat_EmployeeSavingsandRetirementPlanAbstract_af85ddea-74c7-4b16-8983-91a653002e12" xlink:to="loc_amat_DefinedBenefitPlanMatchingContributionVestingPercentage_b7125b89-707a-40db-97b0-e029bd7c5279" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount_adb0f5b9-8368-4990-97ae-6352d374f604" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_amat_EmployeeSavingsandRetirementPlanAbstract_af85ddea-74c7-4b16-8983-91a653002e12" xlink:to="loc_us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount_adb0f5b9-8368-4990-97ae-6352d374f604" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_DefinedBenefitPensionPlansofForeignSubsidiariesandOtherPostRetirementBenefitsAbstract_086949ad-9503-4912-8bf2-b153aefc3235" xlink:href="amat-20211031.xsd#amat_DefinedBenefitPensionPlansofForeignSubsidiariesandOtherPostRetirementBenefitsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_07d28a47-0295-46d5-b570-96707f6693a9" xlink:to="loc_amat_DefinedBenefitPensionPlansofForeignSubsidiariesandOtherPostRetirementBenefitsAbstract_086949ad-9503-4912-8bf2-b153aefc3235" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear_308299e8-e405-4a45-aba6-f5c85bf8a9f8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_amat_DefinedBenefitPensionPlansofForeignSubsidiariesandOtherPostRetirementBenefitsAbstract_086949ad-9503-4912-8bf2-b153aefc3235" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear_308299e8-e405-4a45-aba6-f5c85bf8a9f8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredCompensationArrangementsAbstract_b2da78ec-1d91-48f7-91d1-eee62308f83a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredCompensationArrangementsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_07d28a47-0295-46d5-b570-96707f6693a9" xlink:to="loc_us-gaap_DeferredCompensationArrangementsAbstract_b2da78ec-1d91-48f7-91d1-eee62308f83a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_DeferredCompensationNumberofUnfundedPlans_ab751cc6-5ad2-4873-9898-6b7db34bb74d" xlink:href="amat-20211031.xsd#amat_DeferredCompensationNumberofUnfundedPlans"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredCompensationArrangementsAbstract_b2da78ec-1d91-48f7-91d1-eee62308f83a" xlink:to="loc_amat_DeferredCompensationNumberofUnfundedPlans_ab751cc6-5ad2-4873-9898-6b7db34bb74d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent_49c0ef62-c4f8-4ecf-9c0a-3d60a6ee40d4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredCompensationArrangementsAbstract_b2da78ec-1d91-48f7-91d1-eee62308f83a" xlink:to="loc_us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent_49c0ef62-c4f8-4ecf-9c0a-3d60a6ee40d4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_09072c53-53b6-41ef-977f-44f9467c2513" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_07d28a47-0295-46d5-b570-96707f6693a9" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_09072c53-53b6-41ef-977f-44f9467c2513" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameAxis_8194bb3d-de98-4a81-af48-b0571b75911d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PlanNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_09072c53-53b6-41ef-977f-44f9467c2513" xlink:to="loc_us-gaap_PlanNameAxis_8194bb3d-de98-4a81-af48-b0571b75911d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_8194bb3d-de98-4a81-af48-b0571b75911d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_8194bb3d-de98-4a81-af48-b0571b75911d" xlink:to="loc_us-gaap_PlanNameDomain_8194bb3d-de98-4a81-af48-b0571b75911d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_7548355c-2575-40e6-89b8-65db04e2e9fc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_8194bb3d-de98-4a81-af48-b0571b75911d" xlink:to="loc_us-gaap_PlanNameDomain_7548355c-2575-40e6-89b8-65db04e2e9fc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_SavingsandRetirementPlanMember_7fb59ef4-0c68-4f71-870c-e29a5ed4563f" xlink:href="amat-20211031.xsd#amat_SavingsandRetirementPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_7548355c-2575-40e6-89b8-65db04e2e9fc" xlink:to="loc_amat_SavingsandRetirementPlanMember_7fb59ef4-0c68-4f71-870c-e29a5ed4563f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_046cfe8d-d837-4bb2-a713-5579370a45bf" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_09072c53-53b6-41ef-977f-44f9467c2513" xlink:to="loc_srt_RangeAxis_046cfe8d-d837-4bb2-a713-5579370a45bf" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_046cfe8d-d837-4bb2-a713-5579370a45bf_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_046cfe8d-d837-4bb2-a713-5579370a45bf" xlink:to="loc_srt_RangeMember_046cfe8d-d837-4bb2-a713-5579370a45bf_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_d6664475-62a2-4299-9462-c776634e4170" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_046cfe8d-d837-4bb2-a713-5579370a45bf" xlink:to="loc_srt_RangeMember_d6664475-62a2-4299-9462-c776634e4170" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_603c6c51-f591-4253-87b2-08e1970e30d6" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_d6664475-62a2-4299-9462-c776634e4170" xlink:to="loc_srt_MinimumMember_603c6c51-f591-4253-87b2-08e1970e30d6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_83fc7fc6-1307-4ea4-9e6c-194af45237dd" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_d6664475-62a2-4299-9462-c776634e4170" xlink:to="loc_srt_MaximumMember_83fc7fc6-1307-4ea4-9e6c-194af45237dd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis_e70eb1a0-0d20-47dd-9958-7fe20e9ae027" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_09072c53-53b6-41ef-977f-44f9467c2513" xlink:to="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis_e70eb1a0-0d20-47dd-9958-7fe20e9ae027" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain_e70eb1a0-0d20-47dd-9958-7fe20e9ae027_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis_e70eb1a0-0d20-47dd-9958-7fe20e9ae027" xlink:to="loc_us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain_e70eb1a0-0d20-47dd-9958-7fe20e9ae027_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain_77649386-d9e6-4900-84f5-17bb01bb034c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis_e70eb1a0-0d20-47dd-9958-7fe20e9ae027" xlink:to="loc_us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain_77649386-d9e6-4900-84f5-17bb01bb034c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredCompensationExcludingShareBasedPaymentsAndRetirementBenefitsMember_5ae290bf-75e2-4e70-b6c0-ce1db44c89c9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredCompensationExcludingShareBasedPaymentsAndRetirementBenefitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain_77649386-d9e6-4900-84f5-17bb01bb034c" xlink:to="loc_us-gaap_DeferredCompensationExcludingShareBasedPaymentsAndRetirementBenefitsMember_5ae290bf-75e2-4e70-b6c0-ce1db44c89c9" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/EmployeeBenefitPlansBenefitObligationsandPlanAssetsDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#EmployeeBenefitPlansBenefitObligationsandPlanAssetsDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/EmployeeBenefitPlansBenefitObligationsandPlanAssetsDetails" xlink:type="extended" id="i565256f00d6843908ac95bf5532f1bd6_EmployeeBenefitPlansBenefitObligationsandPlanAssetsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_d70f8d33-56f8-4bb5-8616-2c995e9ae2dc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_24bdd1c0-501e-497c-8d2d-dd02529b7148" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_d70f8d33-56f8-4bb5-8616-2c995e9ae2dc" xlink:to="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_24bdd1c0-501e-497c-8d2d-dd02529b7148" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligation_4705962d-3aa5-4e54-894b-39aa27f5d033" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanBenefitObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_24bdd1c0-501e-497c-8d2d-dd02529b7148" xlink:to="loc_us-gaap_DefinedBenefitPlanBenefitObligation_4705962d-3aa5-4e54-894b-39aa27f5d033" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanServiceCost_ca8f2341-94ed-4985-bb79-a062e3b423f1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanServiceCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_24bdd1c0-501e-497c-8d2d-dd02529b7148" xlink:to="loc_us-gaap_DefinedBenefitPlanServiceCost_ca8f2341-94ed-4985-bb79-a062e3b423f1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_3ee3bd87-6bec-4b60-a6a7-520fda055b06" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanInterestCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_24bdd1c0-501e-497c-8d2d-dd02529b7148" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost_3ee3bd87-6bec-4b60-a6a7-520fda055b06" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant_5431d516-313a-40ea-8b1b-04688e29b2a6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_24bdd1c0-501e-497c-8d2d-dd02529b7148" xlink:to="loc_us-gaap_DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant_5431d516-313a-40ea-8b1b-04688e29b2a6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanActuarialGainLoss_88f33fc5-ba71-456d-8771-6ff9a46c2991" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanActuarialGainLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_24bdd1c0-501e-497c-8d2d-dd02529b7148" xlink:to="loc_us-gaap_DefinedBenefitPlanActuarialGainLoss_88f33fc5-ba71-456d-8771-6ff9a46c2991" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_DefinedBenefitPlanCurtailmentsSettlementsAndSpecialTerminationBenefits_a4894007-03e7-435a-982a-d7a0986f4b48" xlink:href="amat-20211031.xsd#amat_DefinedBenefitPlanCurtailmentsSettlementsAndSpecialTerminationBenefits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_24bdd1c0-501e-497c-8d2d-dd02529b7148" xlink:to="loc_amat_DefinedBenefitPlanCurtailmentsSettlementsAndSpecialTerminationBenefits_a4894007-03e7-435a-982a-d7a0986f4b48" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation_1a0981ef-d821-464e-9484-0c1a8eb43c26" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_24bdd1c0-501e-497c-8d2d-dd02529b7148" xlink:to="loc_us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation_1a0981ef-d821-464e-9484-0c1a8eb43c26" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid_c954f364-005e-482d-8fa4-18c6b569f180" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_24bdd1c0-501e-497c-8d2d-dd02529b7148" xlink:to="loc_us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid_c954f364-005e-482d-8fa4-18c6b569f180" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_DefinedBenefitPlanBenefitObligationIncreaseDecreaseForPlanAmendmentAndOtherChanges_51d8c2fa-f198-45e6-9373-ebbf1937818c" xlink:href="amat-20211031.xsd#amat_DefinedBenefitPlanBenefitObligationIncreaseDecreaseForPlanAmendmentAndOtherChanges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_24bdd1c0-501e-497c-8d2d-dd02529b7148" xlink:to="loc_amat_DefinedBenefitPlanBenefitObligationIncreaseDecreaseForPlanAmendmentAndOtherChanges_51d8c2fa-f198-45e6-9373-ebbf1937818c" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligation_8a4a5447-9df1-4c29-a247-6e7ce8e3abdc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanBenefitObligation"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation_cdcf3922-7c71-44f8-a6a8-92ffcd19c4d1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_d70f8d33-56f8-4bb5-8616-2c995e9ae2dc" xlink:to="loc_us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation_cdcf3922-7c71-44f8-a6a8-92ffcd19c4d1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_beed1441-ae89-4691-a118-e0c0feafc2ee" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_d70f8d33-56f8-4bb5-8616-2c995e9ae2dc" xlink:to="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_beed1441-ae89-4691-a118-e0c0feafc2ee" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_4668fb7f-e43a-4975-8d9f-3780bc019062" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_beed1441-ae89-4691-a118-e0c0feafc2ee" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_4668fb7f-e43a-4975-8d9f-3780bc019062" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease_2684c34a-beba-4533-b8cb-a3edd1232e86" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_beed1441-ae89-4691-a118-e0c0feafc2ee" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease_2684c34a-beba-4533-b8cb-a3edd1232e86" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_de0490f3-3558-409a-a5af-b356eef4e47d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_d70f8d33-56f8-4bb5-8616-2c995e9ae2dc" xlink:to="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_de0490f3-3558-409a-a5af-b356eef4e47d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_50f2e409-c581-4e4c-9f74-cdae52f66e8d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_de0490f3-3558-409a-a5af-b356eef4e47d" xlink:to="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_50f2e409-c581-4e4c-9f74-cdae52f66e8d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets_4df4290b-4334-43e0-8f1e-f73f1878aec2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_de0490f3-3558-409a-a5af-b356eef4e47d" xlink:to="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets_4df4290b-4334-43e0-8f1e-f73f1878aec2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanContributionsByEmployer_2cd4121b-9fe0-4ff0-99d1-6749427e9ed7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanContributionsByEmployer"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_de0490f3-3558-409a-a5af-b356eef4e47d" xlink:to="loc_us-gaap_DefinedBenefitPlanContributionsByEmployer_2cd4121b-9fe0-4ff0-99d1-6749427e9ed7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant_4185acb8-9a01-4b55-a83c-6d69c7e4e910" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_de0490f3-3558-409a-a5af-b356eef4e47d" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant_4185acb8-9a01-4b55-a83c-6d69c7e4e910" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss_4f37dc2d-d654-4a11-a426-ecb2ebc3edb1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_de0490f3-3558-409a-a5af-b356eef4e47d" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss_4f37dc2d-d654-4a11-a426-ecb2ebc3edb1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanSettlementsPlanAssets_703fc028-c2a0-410b-ae62-b5005ec0f00e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanSettlementsPlanAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_de0490f3-3558-409a-a5af-b356eef4e47d" xlink:to="loc_us-gaap_DefinedBenefitPlanSettlementsPlanAssets_703fc028-c2a0-410b-ae62-b5005ec0f00e" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid_89c221ce-f242-495b-a7dc-b330bb5357a5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_de0490f3-3558-409a-a5af-b356eef4e47d" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid_89c221ce-f242-495b-a7dc-b330bb5357a5" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_34e7cb70-a46b-4e40-8c8c-669a5ba65a48" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlan_94cc1012-d6d2-4a8a-a4fa-e51e71187fcb" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanFundedStatusOfPlan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_d70f8d33-56f8-4bb5-8616-2c995e9ae2dc" xlink:to="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlan_94cc1012-d6d2-4a8a-a4fa-e51e71187fcb" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_c0076201-680a-464c-b522-a17f73c706c4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_d70f8d33-56f8-4bb5-8616-2c995e9ae2dc" xlink:to="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_c0076201-680a-464c-b522-a17f73c706c4" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent_bf958b45-ce4f-4c56-94c1-2666924106cd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_c0076201-680a-464c-b522-a17f73c706c4" xlink:to="loc_us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent_bf958b45-ce4f-4c56-94c1-2666924106cd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities_23c23ade-eafb-49de-9ef2-71e33512d4be" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_c0076201-680a-464c-b522-a17f73c706c4" xlink:to="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities_23c23ade-eafb-49de-9ef2-71e33512d4be" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_6b45a325-e2df-4036-8746-a2d2d4704c0f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_c0076201-680a-464c-b522-a17f73c706c4" xlink:to="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_6b45a325-e2df-4036-8746-a2d2d4704c0f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet_8b3218ce-7f38-46f0-aa88-25c3318f4b3b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_c0076201-680a-464c-b522-a17f73c706c4" xlink:to="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet_8b3218ce-7f38-46f0-aa88-25c3318f4b3b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYearAbstract_53e0062a-dbf1-47f1-9022-da5b16c6e60a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYearAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_d70f8d33-56f8-4bb5-8616-2c995e9ae2dc" xlink:to="loc_us-gaap_DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYearAbstract_53e0062a-dbf1-47f1-9022-da5b16c6e60a" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear_12f8725c-b8e6-4d7c-8785-118c94558057" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYearAbstract_53e0062a-dbf1-47f1-9022-da5b16c6e60a" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear_12f8725c-b8e6-4d7c-8785-118c94558057" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedAmortizationOfPriorServiceCostCreditNextFiscalYear_32df1735-38f9-4e36-8310-81ef04a9eb2b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedAmortizationOfPriorServiceCostCreditNextFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYearAbstract_53e0062a-dbf1-47f1-9022-da5b16c6e60a" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedAmortizationOfPriorServiceCostCreditNextFiscalYear_32df1735-38f9-4e36-8310-81ef04a9eb2b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedAmortizationNextFiscalYear_d1693b7c-7d55-44b7-abbf-29af7e7ded45" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedAmortizationNextFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYearAbstract_53e0062a-dbf1-47f1-9022-da5b16c6e60a" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedAmortizationNextFiscalYear_d1693b7c-7d55-44b7-abbf-29af7e7ded45" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract_46fa5310-9fd2-4d24-a3d6-696c63fb7273" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_d70f8d33-56f8-4bb5-8616-2c995e9ae2dc" xlink:to="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract_46fa5310-9fd2-4d24-a3d6-696c63fb7273" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax_f479a8f3-d34d-4b08-abec-c19eb74d745f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract_46fa5310-9fd2-4d24-a3d6-696c63fb7273" xlink:to="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax_f479a8f3-d34d-4b08-abec-c19eb74d745f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax_15ac0d2e-88ed-4695-89aa-56c2caf2d54b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract_46fa5310-9fd2-4d24-a3d6-696c63fb7273" xlink:to="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax_15ac0d2e-88ed-4695-89aa-56c2caf2d54b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax_24d92e96-093d-4037-8f21-e1bd4d56f9fc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract_46fa5310-9fd2-4d24-a3d6-696c63fb7273" xlink:to="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax_24d92e96-093d-4037-8f21-e1bd4d56f9fc" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract_90b74c37-7f36-4012-b674-9199df939ba4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_d70f8d33-56f8-4bb5-8616-2c995e9ae2dc" xlink:to="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract_90b74c37-7f36-4012-b674-9199df939ba4" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation_d4120271-3709-4c90-9c8e-8313f261d9da" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract_90b74c37-7f36-4012-b674-9199df939ba4" xlink:to="loc_us-gaap_DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation_d4120271-3709-4c90-9c8e-8313f261d9da" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets_a7828ecd-61ff-4e87-8ce5-89580b84f995" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract_90b74c37-7f36-4012-b674-9199df939ba4" xlink:to="loc_us-gaap_DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets_a7828ecd-61ff-4e87-8ce5-89580b84f995" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPlansWithBenefitObligationsInExcessOfPlanAssetsAbstract_67c57e79-c423-4a1b-a7dd-da2fdcb5beae" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanPlansWithBenefitObligationsInExcessOfPlanAssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_d70f8d33-56f8-4bb5-8616-2c995e9ae2dc" xlink:to="loc_us-gaap_DefinedBenefitPlanPlansWithBenefitObligationsInExcessOfPlanAssetsAbstract_67c57e79-c423-4a1b-a7dd-da2fdcb5beae" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation_473200ea-add0-4c76-a796-65adec66e445" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanPlansWithBenefitObligationsInExcessOfPlanAssetsAbstract_67c57e79-c423-4a1b-a7dd-da2fdcb5beae" xlink:to="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation_473200ea-add0-4c76-a796-65adec66e445" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets_766129e9-23c7-4be3-ac56-38f89260ecec" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanPlansWithBenefitObligationsInExcessOfPlanAssetsAbstract_67c57e79-c423-4a1b-a7dd-da2fdcb5beae" xlink:to="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets_766129e9-23c7-4be3-ac56-38f89260ecec" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_b6b8e533-f100-4dad-b0e2-8413d6ba4f23" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_d70f8d33-56f8-4bb5-8616-2c995e9ae2dc" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_b6b8e533-f100-4dad-b0e2-8413d6ba4f23" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_18a1a82f-15ed-4dac-8e78-1f36a77e38c6" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_b6b8e533-f100-4dad-b0e2-8413d6ba4f23" xlink:to="loc_srt_RangeAxis_18a1a82f-15ed-4dac-8e78-1f36a77e38c6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_18a1a82f-15ed-4dac-8e78-1f36a77e38c6_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_18a1a82f-15ed-4dac-8e78-1f36a77e38c6" xlink:to="loc_srt_RangeMember_18a1a82f-15ed-4dac-8e78-1f36a77e38c6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_5b39eeed-6e05-4489-9eb6-2d6e76ea3429" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_18a1a82f-15ed-4dac-8e78-1f36a77e38c6" xlink:to="loc_srt_RangeMember_5b39eeed-6e05-4489-9eb6-2d6e76ea3429" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_6f983e17-9420-467f-a9d6-df6a4ddc0c96" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_5b39eeed-6e05-4489-9eb6-2d6e76ea3429" xlink:to="loc_srt_MinimumMember_6f983e17-9420-467f-a9d6-df6a4ddc0c96" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_3077a84f-130a-44f1-a634-4e4dad3c520c" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_5b39eeed-6e05-4489-9eb6-2d6e76ea3429" xlink:to="loc_srt_MaximumMember_3077a84f-130a-44f1-a634-4e4dad3c520c" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/EmployeeBenefitPlansPlanAssetsAllocationDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#EmployeeBenefitPlansPlanAssetsAllocationDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/EmployeeBenefitPlansPlanAssetsAllocationDetails" xlink:type="extended" id="i23f8ee6945054f79ae24f84ab961a1a7_EmployeeBenefitPlansPlanAssetsAllocationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_e2ba6cdc-cdd1-4cea-9ab6-c23eac176802" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage_f2b6f96c-e1ca-4584-92ba-182a446ac93d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_e2ba6cdc-cdd1-4cea-9ab6-c23eac176802" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage_f2b6f96c-e1ca-4584-92ba-182a446ac93d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_4563db4f-9a95-4167-81c8-3d8c31dc7ee1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_e2ba6cdc-cdd1-4cea-9ab6-c23eac176802" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_4563db4f-9a95-4167-81c8-3d8c31dc7ee1" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_65b9f584-5d42-4753-a5ec-1f1a8f7df5ca" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_4563db4f-9a95-4167-81c8-3d8c31dc7ee1" xlink:to="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_65b9f584-5d42-4753-a5ec-1f1a8f7df5ca" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_65b9f584-5d42-4753-a5ec-1f1a8f7df5ca_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PlanAssetCategoriesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_65b9f584-5d42-4753-a5ec-1f1a8f7df5ca" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_65b9f584-5d42-4753-a5ec-1f1a8f7df5ca_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_cdaefc49-0024-4a13-8936-e503c8a5afe3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PlanAssetCategoriesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_65b9f584-5d42-4753-a5ec-1f1a8f7df5ca" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_cdaefc49-0024-4a13-8936-e503c8a5afe3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesMember_d1992139-19e5-429c-b2e9-bcadfdcd0c03" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanEquitySecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_cdaefc49-0024-4a13-8936-e503c8a5afe3" xlink:to="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesMember_d1992139-19e5-429c-b2e9-bcadfdcd0c03" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDebtSecurityMember_08ba63ef-3ca5-4d9a-ae05-b8ea40f0e68d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanDebtSecurityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_cdaefc49-0024-4a13-8936-e503c8a5afe3" xlink:to="loc_us-gaap_DefinedBenefitPlanDebtSecurityMember_08ba63ef-3ca5-4d9a-ae05-b8ea40f0e68d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_InsuranceContractsMember_ed094fb1-0d8c-4068-bde5-c457eb9ac7ca" xlink:href="amat-20211031.xsd#amat_InsuranceContractsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_cdaefc49-0024-4a13-8936-e503c8a5afe3" xlink:to="loc_amat_InsuranceContractsMember_ed094fb1-0d8c-4068-bde5-c457eb9ac7ca" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherInvestmentsMember_ab010e75-34bc-4521-b4cc-43417a0b3356" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherInvestmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_cdaefc49-0024-4a13-8936-e503c8a5afe3" xlink:to="loc_us-gaap_OtherInvestmentsMember_ab010e75-34bc-4521-b4cc-43417a0b3356" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/EmployeeBenefitPlansFairValueofPlanAssetsDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#EmployeeBenefitPlansFairValueofPlanAssetsDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/EmployeeBenefitPlansFairValueofPlanAssetsDetails" xlink:type="extended" id="i42f14e6d5c6f4facaf5e9700df8d3012_EmployeeBenefitPlansFairValueofPlanAssetsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_1bba8095-d63d-45f0-93b5-642f3d793dc8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_87eba32e-9d3a-48c2-9f83-f43bfc6ac571" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_1bba8095-d63d-45f0-93b5-642f3d793dc8" xlink:to="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_87eba32e-9d3a-48c2-9f83-f43bfc6ac571" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_14d6c40e-f7bd-4ede-b4b5-429c6e627b6b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_1bba8095-d63d-45f0-93b5-642f3d793dc8" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_14d6c40e-f7bd-4ede-b4b5-429c6e627b6b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_938b3f96-b988-4864-aa72-3fad3974e1a4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_14d6c40e-f7bd-4ede-b4b5-429c6e627b6b" xlink:to="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_938b3f96-b988-4864-aa72-3fad3974e1a4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_938b3f96-b988-4864-aa72-3fad3974e1a4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PlanAssetCategoriesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_938b3f96-b988-4864-aa72-3fad3974e1a4" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_938b3f96-b988-4864-aa72-3fad3974e1a4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_d373b7e1-7502-40af-9076-e1f58ddb5e60" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PlanAssetCategoriesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_938b3f96-b988-4864-aa72-3fad3974e1a4" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_d373b7e1-7502-40af-9076-e1f58ddb5e60" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesMember_fa862785-4a2b-40c1-84d6-376c2202a135" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanEquitySecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_d373b7e1-7502-40af-9076-e1f58ddb5e60" xlink:to="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesMember_fa862785-4a2b-40c1-84d6-376c2202a135" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDebtSecurityMember_0ba1d849-2b87-4e30-97a9-8370a4d3e140" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanDebtSecurityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_d373b7e1-7502-40af-9076-e1f58ddb5e60" xlink:to="loc_us-gaap_DefinedBenefitPlanDebtSecurityMember_0ba1d849-2b87-4e30-97a9-8370a4d3e140" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_InsuranceContractsMember_bf6a9f1b-1a0b-420a-b50a-b2294906b08a" xlink:href="amat-20211031.xsd#amat_InsuranceContractsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_d373b7e1-7502-40af-9076-e1f58ddb5e60" xlink:to="loc_amat_InsuranceContractsMember_bf6a9f1b-1a0b-420a-b50a-b2294906b08a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherInvestmentsMember_4a6f91d3-0e93-4a0f-bbc3-61edfce802b2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherInvestmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_d373b7e1-7502-40af-9076-e1f58ddb5e60" xlink:to="loc_us-gaap_OtherInvestmentsMember_4a6f91d3-0e93-4a0f-bbc3-61edfce802b2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanCashMember_585fe687-c161-4a25-9202-018b78233abc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanCashMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_d373b7e1-7502-40af-9076-e1f58ddb5e60" xlink:to="loc_us-gaap_DefinedBenefitPlanCashMember_585fe687-c161-4a25-9202-018b78233abc" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_3d1a057d-9670-4d73-9177-7be595a2fcfd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_14d6c40e-f7bd-4ede-b4b5-429c6e627b6b" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_3d1a057d-9670-4d73-9177-7be595a2fcfd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_3d1a057d-9670-4d73-9177-7be595a2fcfd_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_3d1a057d-9670-4d73-9177-7be595a2fcfd" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_3d1a057d-9670-4d73-9177-7be595a2fcfd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_3ad70341-f8ac-470a-9ab3-ccb1eb5c8d85" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_3d1a057d-9670-4d73-9177-7be595a2fcfd" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_3ad70341-f8ac-470a-9ab3-ccb1eb5c8d85" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel12And3Member_936ade75-9150-449b-80ec-40066d1600ce" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueInputsLevel12And3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_3ad70341-f8ac-470a-9ab3-ccb1eb5c8d85" xlink:to="loc_us-gaap_FairValueInputsLevel12And3Member_936ade75-9150-449b-80ec-40066d1600ce" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_1980d35a-4f5b-4201-ae30-892ceab06ec1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueInputsLevel12And3Member_936ade75-9150-449b-80ec-40066d1600ce" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_1980d35a-4f5b-4201-ae30-892ceab06ec1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_08cbb97e-0653-4e2b-b682-3460a6f98517" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueInputsLevel12And3Member_936ade75-9150-449b-80ec-40066d1600ce" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_08cbb97e-0653-4e2b-b682-3460a6f98517" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_ea194438-08ac-4de7-acdf-b3a0e7e227f6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueInputsLevel12And3Member_936ade75-9150-449b-80ec-40066d1600ce" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_ea194438-08ac-4de7-acdf-b3a0e7e227f6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasuredAtNetAssetValuePerShareMember_57fa5f7f-ebfa-42dd-95c8-f75fa6c38af2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueMeasuredAtNetAssetValuePerShareMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_3ad70341-f8ac-470a-9ab3-ccb1eb5c8d85" xlink:to="loc_us-gaap_FairValueMeasuredAtNetAssetValuePerShareMember_57fa5f7f-ebfa-42dd-95c8-f75fa6c38af2" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/EmployeeBenefitPlansLevel3InstrumentsDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#EmployeeBenefitPlansLevel3InstrumentsDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/EmployeeBenefitPlansLevel3InstrumentsDetails" xlink:type="extended" id="idc3b9a5196474f4bae54b53ab7193d53_EmployeeBenefitPlansLevel3InstrumentsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_ce6360ee-39f8-4b1f-8126-d87b70969154" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_4cedd743-9d22-43a5-b3c9-56fdf861b718" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_ce6360ee-39f8-4b1f-8126-d87b70969154" xlink:to="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_4cedd743-9d22-43a5-b3c9-56fdf861b718" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_4b753a78-b75c-4d7d-997e-44b5c1251151" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_4cedd743-9d22-43a5-b3c9-56fdf861b718" xlink:to="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_4b753a78-b75c-4d7d-997e-44b5c1251151" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPurchasesSalesAndSettlements_12c52542-f092-4dee-bbb4-3252ec9b0ef9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanPurchasesSalesAndSettlements"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_4cedd743-9d22-43a5-b3c9-56fdf861b718" xlink:to="loc_us-gaap_DefinedBenefitPlanPurchasesSalesAndSettlements_12c52542-f092-4dee-bbb4-3252ec9b0ef9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss_6bb5aac8-6814-4cbd-8f7b-3d115735ff3f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_4cedd743-9d22-43a5-b3c9-56fdf861b718" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss_6bb5aac8-6814-4cbd-8f7b-3d115735ff3f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_e284e0dd-1432-4c67-b447-4623c4782b31" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_890e1132-6237-484b-83ee-bbd7f1e44544" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_ce6360ee-39f8-4b1f-8126-d87b70969154" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_890e1132-6237-484b-83ee-bbd7f1e44544" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_17ffd40a-90b1-4694-b8c9-888e1f32896a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_890e1132-6237-484b-83ee-bbd7f1e44544" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_17ffd40a-90b1-4694-b8c9-888e1f32896a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_17ffd40a-90b1-4694-b8c9-888e1f32896a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_17ffd40a-90b1-4694-b8c9-888e1f32896a" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_17ffd40a-90b1-4694-b8c9-888e1f32896a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_1fbb29e5-0131-43be-971d-aa6a31023b61" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_17ffd40a-90b1-4694-b8c9-888e1f32896a" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_1fbb29e5-0131-43be-971d-aa6a31023b61" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_2240dfc5-6b61-4ac2-a8d7-fa49b382061b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_1fbb29e5-0131-43be-971d-aa6a31023b61" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_2240dfc5-6b61-4ac2-a8d7-fa49b382061b" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/IncomeTaxesNarrativeDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#IncomeTaxesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/IncomeTaxesNarrativeDetails" xlink:type="extended" id="i32f0c1cc603a45f3a5da5aac55e6dde6_IncomeTaxesNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExaminationLineItems_316ec014-9e0b-4805-aa61-b6412cef2299" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxExaminationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_TaxCutsAndJobsActGlobalIntangibleLowTaxedIncomeProvisionalExpenseBenefit_8fbb19bb-be16-4b9e-91bf-2f5ade21496e" xlink:href="amat-20211031.xsd#amat_TaxCutsAndJobsActGlobalIntangibleLowTaxedIncomeProvisionalExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxExaminationLineItems_316ec014-9e0b-4805-aa61-b6412cef2299" xlink:to="loc_amat_TaxCutsAndJobsActGlobalIntangibleLowTaxedIncomeProvisionalExpenseBenefit_8fbb19bb-be16-4b9e-91bf-2f5ade21496e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_EffectiveIncomeTaxRateReconciliationatForeignStatutoryIncomeTaxRatePercent_0ac9f162-5543-456b-b2e2-d9b5fd9abec8" xlink:href="amat-20211031.xsd#amat_EffectiveIncomeTaxRateReconciliationatForeignStatutoryIncomeTaxRatePercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxExaminationLineItems_316ec014-9e0b-4805-aa61-b6412cef2299" xlink:to="loc_amat_EffectiveIncomeTaxRateReconciliationatForeignStatutoryIncomeTaxRatePercent_0ac9f162-5543-456b-b2e2-d9b5fd9abec8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxHolidayAggregateDollarAmount_b5eb10e7-7802-4e8a-a79c-b462882d6de4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxHolidayAggregateDollarAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxExaminationLineItems_316ec014-9e0b-4805-aa61-b6412cef2299" xlink:to="loc_us-gaap_IncomeTaxHolidayAggregateDollarAmount_b5eb10e7-7802-4e8a-a79c-b462882d6de4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxHolidayIncomeTaxBenefitsPerShare_d84d0b37-88f0-4d9a-bf74-436ef6a72d7c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxHolidayIncomeTaxBenefitsPerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxExaminationLineItems_316ec014-9e0b-4805-aa61-b6412cef2299" xlink:to="loc_us-gaap_IncomeTaxHolidayIncomeTaxBenefitsPerShare_d84d0b37-88f0-4d9a-bf74-436ef6a72d7c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxCreditCarryforwardAmount_536adc61-0a70-44c4-8e5c-94c7ae973cc4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TaxCreditCarryforwardAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxExaminationLineItems_316ec014-9e0b-4805-aa61-b6412cef2299" xlink:to="loc_us-gaap_TaxCreditCarryforwardAmount_536adc61-0a70-44c4-8e5c-94c7ae973cc4" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_TaxCreditCarryforwardTerm_9afc9a25-92b5-44ce-b407-80bab5c0223f" xlink:href="amat-20211031.xsd#amat_TaxCreditCarryforwardTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxExaminationLineItems_316ec014-9e0b-4805-aa61-b6412cef2299" xlink:to="loc_amat_TaxCreditCarryforwardTerm_9afc9a25-92b5-44ce-b407-80bab5c0223f" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExaminationLiabilityRefundAdjustmentFromSettlementWithTaxingAuthority_606dd17b-c1e8-43b6-8f80-c1db84cc2ead" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxExaminationLiabilityRefundAdjustmentFromSettlementWithTaxingAuthority"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxExaminationLineItems_316ec014-9e0b-4805-aa61-b6412cef2299" xlink:to="loc_us-gaap_IncomeTaxExaminationLiabilityRefundAdjustmentFromSettlementWithTaxingAuthority_606dd17b-c1e8-43b6-8f80-c1db84cc2ead" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities_8ee5e04a-2057-4a02-a73d-4b2589ab7ee1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxExaminationLineItems_316ec014-9e0b-4805-aa61-b6412cef2299" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities_8ee5e04a-2057-4a02-a73d-4b2589ab7ee1" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationTaxSettlementsForeign_b9b34af2-769d-457f-b0d6-02956fb12aa0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxReconciliationTaxSettlementsForeign"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxExaminationLineItems_316ec014-9e0b-4805-aa61-b6412cef2299" xlink:to="loc_us-gaap_IncomeTaxReconciliationTaxSettlementsForeign_b9b34af2-769d-457f-b0d6-02956fb12aa0" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions_18f07082-ce89-461c-a4cf-e1faccbe43e6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxExaminationLineItems_316ec014-9e0b-4805-aa61-b6412cef2299" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions_18f07082-ce89-461c-a4cf-e1faccbe43e6" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense_a350e0cd-67ba-4865-9ec6-2767f6a97a02" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxExaminationLineItems_316ec014-9e0b-4805-aa61-b6412cef2299" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense_a350e0cd-67ba-4865-9ec6-2767f6a97a02" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued_c473384b-1eab-4b67-8435-664fe2b78d08" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxExaminationLineItems_316ec014-9e0b-4805-aa61-b6412cef2299" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued_c473384b-1eab-4b67-8435-664fe2b78d08" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_5e6065e6-86f0-484e-a9cc-5fffe5bdc9b1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxExaminationLineItems_316ec014-9e0b-4805-aa61-b6412cef2299" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_5e6065e6-86f0-484e-a9cc-5fffe5bdc9b1" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExaminationTable_5de608f4-ed74-4305-b230-783d51dda765" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxExaminationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeTaxExaminationLineItems_316ec014-9e0b-4805-aa61-b6412cef2299" xlink:to="loc_us-gaap_IncomeTaxExaminationTable_5de608f4-ed74-4305-b230-783d51dda765" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_93c9df9e-0c79-4362-8f7a-9c54c4e20ee6" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeTaxExaminationTable_5de608f4-ed74-4305-b230-783d51dda765" xlink:to="loc_srt_StatementGeographicalAxis_93c9df9e-0c79-4362-8f7a-9c54c4e20ee6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_93c9df9e-0c79-4362-8f7a-9c54c4e20ee6_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_93c9df9e-0c79-4362-8f7a-9c54c4e20ee6" xlink:to="loc_srt_SegmentGeographicalDomain_93c9df9e-0c79-4362-8f7a-9c54c4e20ee6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_37c3ae19-a086-4ef4-b68c-2e491dd01e6f" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_93c9df9e-0c79-4362-8f7a-9c54c4e20ee6" xlink:to="loc_srt_SegmentGeographicalDomain_37c3ae19-a086-4ef4-b68c-2e491dd01e6f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_SG_35972984-9d0a-4d8d-afd9-2c7251c05efa" xlink:href="https://xbrl.sec.gov/country/2021/country-2021.xsd#country_SG"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_37c3ae19-a086-4ef4-b68c-2e491dd01e6f" xlink:to="loc_country_SG_35972984-9d0a-4d8d-afd9-2c7251c05efa" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxCreditCarryforwardAxis_5303f446-75b4-46d0-a0b6-8c7c0b443ca8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TaxCreditCarryforwardAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeTaxExaminationTable_5de608f4-ed74-4305-b230-783d51dda765" xlink:to="loc_us-gaap_TaxCreditCarryforwardAxis_5303f446-75b4-46d0-a0b6-8c7c0b443ca8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxCreditCarryforwardNameDomain_5303f446-75b4-46d0-a0b6-8c7c0b443ca8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TaxCreditCarryforwardNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_TaxCreditCarryforwardAxis_5303f446-75b4-46d0-a0b6-8c7c0b443ca8" xlink:to="loc_us-gaap_TaxCreditCarryforwardNameDomain_5303f446-75b4-46d0-a0b6-8c7c0b443ca8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxCreditCarryforwardNameDomain_792d6c91-e5f4-4048-bea5-eaa1f6a10576" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TaxCreditCarryforwardNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_TaxCreditCarryforwardAxis_5303f446-75b4-46d0-a0b6-8c7c0b443ca8" xlink:to="loc_us-gaap_TaxCreditCarryforwardNameDomain_792d6c91-e5f4-4048-bea5-eaa1f6a10576" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResearchMember_e3cefd8c-9dfa-410b-8c42-975ef3a1761e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ResearchMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TaxCreditCarryforwardNameDomain_792d6c91-e5f4-4048-bea5-eaa1f6a10576" xlink:to="loc_us-gaap_ResearchMember_e3cefd8c-9dfa-410b-8c42-975ef3a1761e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_ResearchCarriedOverUntilExhaustedMember_1a7c548b-8fb1-4a2b-940e-e918081d1983" xlink:href="amat-20211031.xsd#amat_ResearchCarriedOverUntilExhaustedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ResearchMember_e3cefd8c-9dfa-410b-8c42-975ef3a1761e" xlink:to="loc_amat_ResearchCarriedOverUntilExhaustedMember_1a7c548b-8fb1-4a2b-940e-e918081d1983" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_ResearchCarriedOverTheNextFifteenYearsMember_3d81e945-08c2-4fd9-8ce9-56422a6a41b0" xlink:href="amat-20211031.xsd#amat_ResearchCarriedOverTheNextFifteenYearsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ResearchMember_e3cefd8c-9dfa-410b-8c42-975ef3a1761e" xlink:to="loc_amat_ResearchCarriedOverTheNextFifteenYearsMember_3d81e945-08c2-4fd9-8ce9-56422a6a41b0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityAxis_5296bd50-8743-446d-bcc2-e696af124b83" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxAuthorityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeTaxExaminationTable_5de608f4-ed74-4305-b230-783d51dda765" xlink:to="loc_us-gaap_IncomeTaxAuthorityAxis_5296bd50-8743-446d-bcc2-e696af124b83" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_5296bd50-8743-446d-bcc2-e696af124b83_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxAuthorityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_5296bd50-8743-446d-bcc2-e696af124b83" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_5296bd50-8743-446d-bcc2-e696af124b83_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_d08aab86-2eec-4558-9ab0-4932bcb103e3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxAuthorityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_5296bd50-8743-446d-bcc2-e696af124b83" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_d08aab86-2eec-4558-9ab0-4932bcb103e3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StateAndLocalJurisdictionMember_df15f6ed-111e-47fa-b422-a63dc383a26f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StateAndLocalJurisdictionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_d08aab86-2eec-4558-9ab0-4932bcb103e3" xlink:to="loc_us-gaap_StateAndLocalJurisdictionMember_df15f6ed-111e-47fa-b422-a63dc383a26f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCountryMember_dca84acd-3835-463d-a8de-6306bd078fbb" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ForeignCountryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_d08aab86-2eec-4558-9ab0-4932bcb103e3" xlink:to="loc_us-gaap_ForeignCountryMember_dca84acd-3835-463d-a8de-6306bd078fbb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_ac312172-9268-47bc-bd62-3e2e599eb479" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BalanceSheetLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeTaxExaminationTable_5de608f4-ed74-4305-b230-783d51dda765" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_ac312172-9268-47bc-bd62-3e2e599eb479" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_ac312172-9268-47bc-bd62-3e2e599eb479_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BalanceSheetLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_ac312172-9268-47bc-bd62-3e2e599eb479" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_ac312172-9268-47bc-bd62-3e2e599eb479_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_7d3003ce-37f2-45e5-848f-18cbec66dbb1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BalanceSheetLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_ac312172-9268-47bc-bd62-3e2e599eb479" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_7d3003ce-37f2-45e5-848f-18cbec66dbb1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNoncurrentLiabilitiesMember_1a922a1e-356b-43e5-a7a3-16c8bb85dab8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherNoncurrentLiabilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_7d3003ce-37f2-45e5-848f-18cbec66dbb1" xlink:to="loc_us-gaap_OtherNoncurrentLiabilitiesMember_1a922a1e-356b-43e5-a7a3-16c8bb85dab8" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/IncomeTaxesValuationAllowanceDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#IncomeTaxesValuationAllowanceDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/IncomeTaxesValuationAllowanceDetails" xlink:type="extended" id="i0776ce486b0b4e54afdf9896b2d312c6_IncomeTaxesValuationAllowanceDetails">
    <link:loc xlink:type="locator" xlink:label="loc_srt_ValuationAndQualifyingAccountsDisclosureLineItems_684c906f-6667-451f-8e8a-ba3191e4ca65" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ValuationAndQualifyingAccountsDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_d56d1303-0e49-44d9-8b31-cca7519852b3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_MovementInValuationAllowancesAndReservesRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ValuationAndQualifyingAccountsDisclosureLineItems_684c906f-6667-451f-8e8a-ba3191e4ca65" xlink:to="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_d56d1303-0e49-44d9-8b31-cca7519852b3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesBalance_be1194c3-dbfe-454e-bea7-b5caee4f2c20" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ValuationAllowancesAndReservesBalance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_d56d1303-0e49-44d9-8b31-cca7519852b3" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesBalance_be1194c3-dbfe-454e-bea7-b5caee4f2c20" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense_f1048986-56a3-423b-b928-5e2d3a740f2b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_d56d1303-0e49-44d9-8b31-cca7519852b3" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense_f1048986-56a3-423b-b928-5e2d3a740f2b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesDeductions_fe499f29-c881-4550-a90b-0938f02d47c8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ValuationAllowancesAndReservesDeductions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_d56d1303-0e49-44d9-8b31-cca7519852b3" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesDeductions_fe499f29-c881-4550-a90b-0938f02d47c8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesBalance_17f770bb-0a43-4e22-ae37-103d893ff9c4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ValuationAllowancesAndReservesBalance"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ValuationAndQualifyingAccountsDisclosureTable_7166c0e9-8952-401a-a11c-72be7c498289" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ValuationAndQualifyingAccountsDisclosureTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_srt_ValuationAndQualifyingAccountsDisclosureLineItems_684c906f-6667-451f-8e8a-ba3191e4ca65" xlink:to="loc_srt_ValuationAndQualifyingAccountsDisclosureTable_7166c0e9-8952-401a-a11c-72be7c498289" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_0104ff7f-10d2-4684-a2e9-86003ba186c8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ValuationAllowancesAndReservesTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_srt_ValuationAndQualifyingAccountsDisclosureTable_7166c0e9-8952-401a-a11c-72be7c498289" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_0104ff7f-10d2-4684-a2e9-86003ba186c8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesDomain_0104ff7f-10d2-4684-a2e9-86003ba186c8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ValuationAllowancesAndReservesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_0104ff7f-10d2-4684-a2e9-86003ba186c8" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesDomain_0104ff7f-10d2-4684-a2e9-86003ba186c8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesDomain_7ccad955-1487-48d3-b096-e178421db4ba" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ValuationAllowancesAndReservesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_0104ff7f-10d2-4684-a2e9-86003ba186c8" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesDomain_7ccad955-1487-48d3-b096-e178421db4ba" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowanceOfDeferredTaxAssetsMember_83174f7a-4cfa-4861-b27d-444a9b48f1aa" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ValuationAllowanceOfDeferredTaxAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesDomain_7ccad955-1487-48d3-b096-e178421db4ba" xlink:to="loc_us-gaap_ValuationAllowanceOfDeferredTaxAssetsMember_83174f7a-4cfa-4861-b27d-444a9b48f1aa" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/IndustrySegmentOperationsReportableSegmentDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#IndustrySegmentOperationsReportableSegmentDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/IndustrySegmentOperationsReportableSegmentDetails" xlink:type="extended" id="i65976489f2d942c0b0db36f9625f1799_IndustrySegmentOperationsReportableSegmentDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_d64f7a01-ef92-4797-b591-e387fa788bc5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_84ab89fe-eb45-4c2a-9917-7491908b1b57" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_d64f7a01-ef92-4797-b591-e387fa788bc5" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_84ab89fe-eb45-4c2a-9917-7491908b1b57" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_30108379-8e56-40fc-a428-93c0fb96198d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_d64f7a01-ef92-4797-b591-e387fa788bc5" xlink:to="loc_us-gaap_OperatingIncomeLoss_30108379-8e56-40fc-a428-93c0fb96198d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationAndAmortization_492cedcf-4388-4bc3-a962-7d6664547e78" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_d64f7a01-ef92-4797-b591-e387fa788bc5" xlink:to="loc_us-gaap_DepreciationAndAmortization_492cedcf-4388-4bc3-a962-7d6664547e78" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_8e4aea54-8689-4694-94b4-cacc2c3fff04" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_d64f7a01-ef92-4797-b591-e387fa788bc5" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_8e4aea54-8689-4694-94b4-cacc2c3fff04" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_def2c7d0-379f-4a3e-9522-6e4477f87dfc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_d64f7a01-ef92-4797-b591-e387fa788bc5" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_def2c7d0-379f-4a3e-9522-6e4477f87dfc" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_bbf9a530-73fd-4935-b222-1508263e6926" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InventoryNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_d64f7a01-ef92-4797-b591-e387fa788bc5" xlink:to="loc_us-gaap_InventoryNet_bbf9a530-73fd-4935-b222-1508263e6926" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_c91c2892-da2f-4e97-84ef-65cb916a92f5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_d64f7a01-ef92-4797-b591-e387fa788bc5" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_c91c2892-da2f-4e97-84ef-65cb916a92f5" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_c255d54f-efce-4e26-8610-cd632b9a4d3a" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_c91c2892-da2f-4e97-84ef-65cb916a92f5" xlink:to="loc_srt_ConsolidationItemsAxis_c255d54f-efce-4e26-8610-cd632b9a4d3a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_c255d54f-efce-4e26-8610-cd632b9a4d3a_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_c255d54f-efce-4e26-8610-cd632b9a4d3a" xlink:to="loc_srt_ConsolidationItemsDomain_c255d54f-efce-4e26-8610-cd632b9a4d3a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_24e32f1e-24bb-4a1b-8307-6711756b53d8" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_c255d54f-efce-4e26-8610-cd632b9a4d3a" xlink:to="loc_srt_ConsolidationItemsDomain_24e32f1e-24bb-4a1b-8307-6711756b53d8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_4bd0f675-891d-4564-a354-bd3de9bb1a17" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_24e32f1e-24bb-4a1b-8307-6711756b53d8" xlink:to="loc_us-gaap_OperatingSegmentsMember_4bd0f675-891d-4564-a354-bd3de9bb1a17" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_CorporateAndReconcilingItemsMember_fc454b6b-4a15-46e1-9a64-630ad759d4cf" xlink:href="amat-20211031.xsd#amat_CorporateAndReconcilingItemsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_24e32f1e-24bb-4a1b-8307-6711756b53d8" xlink:to="loc_amat_CorporateAndReconcilingItemsMember_fc454b6b-4a15-46e1-9a64-630ad759d4cf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_ee739865-3bfe-4a2b-9e19-c1f3e360dcf6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_c91c2892-da2f-4e97-84ef-65cb916a92f5" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_ee739865-3bfe-4a2b-9e19-c1f3e360dcf6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_ee739865-3bfe-4a2b-9e19-c1f3e360dcf6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_ee739865-3bfe-4a2b-9e19-c1f3e360dcf6" xlink:to="loc_us-gaap_SegmentDomain_ee739865-3bfe-4a2b-9e19-c1f3e360dcf6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_e7bc7435-9dcb-4c2d-b439-17bbf0317a0d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_ee739865-3bfe-4a2b-9e19-c1f3e360dcf6" xlink:to="loc_us-gaap_SegmentDomain_e7bc7435-9dcb-4c2d-b439-17bbf0317a0d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_SemiconductorSystemsMember_e2a943b1-97b5-48f6-8852-801c41da15d2" xlink:href="amat-20211031.xsd#amat_SemiconductorSystemsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_e7bc7435-9dcb-4c2d-b439-17bbf0317a0d" xlink:to="loc_amat_SemiconductorSystemsMember_e2a943b1-97b5-48f6-8852-801c41da15d2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_AppliedGlobalServicesMember_f2472e18-4780-4e07-b2ad-1f7c38460c89" xlink:href="amat-20211031.xsd#amat_AppliedGlobalServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_e7bc7435-9dcb-4c2d-b439-17bbf0317a0d" xlink:to="loc_amat_AppliedGlobalServicesMember_f2472e18-4780-4e07-b2ad-1f7c38460c89" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_DisplayandAdjacentMarketsMember_e01b0644-d062-4454-9349-6a31d713795a" xlink:href="amat-20211031.xsd#amat_DisplayandAdjacentMarketsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_e7bc7435-9dcb-4c2d-b439-17bbf0317a0d" xlink:to="loc_amat_DisplayandAdjacentMarketsMember_e01b0644-d062-4454-9349-6a31d713795a" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/IndustrySegmentOperationsNetSalesandOperatingIncomeLossDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#IndustrySegmentOperationsNetSalesandOperatingIncomeLossDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/IndustrySegmentOperationsNetSalesandOperatingIncomeLossDetails" xlink:type="extended" id="i7a6881633f0d4bb5a1eefee1c786a894_IndustrySegmentOperationsNetSalesandOperatingIncomeLossDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_4ebeeaf8-5235-4844-b412-121014e86f52" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_4dfaae2e-2df2-4430-bf5d-7c88e3b09185" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ConcentrationRiskPercentage1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_4ebeeaf8-5235-4844-b412-121014e86f52" xlink:to="loc_us-gaap_ConcentrationRiskPercentage1_4dfaae2e-2df2-4430-bf5d-7c88e3b09185" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_6aac10b2-6236-40e2-8bf6-6111d1714051" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_4ebeeaf8-5235-4844-b412-121014e86f52" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_6aac10b2-6236-40e2-8bf6-6111d1714051" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_d9093a5d-89d7-4b91-9878-50b9d90e64d6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_6aac10b2-6236-40e2-8bf6-6111d1714051" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_d9093a5d-89d7-4b91-9878-50b9d90e64d6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_d9093a5d-89d7-4b91-9878-50b9d90e64d6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_d9093a5d-89d7-4b91-9878-50b9d90e64d6" xlink:to="loc_us-gaap_SegmentDomain_d9093a5d-89d7-4b91-9878-50b9d90e64d6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_91641d10-a536-4f77-8abc-c0e891976421" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_d9093a5d-89d7-4b91-9878-50b9d90e64d6" xlink:to="loc_us-gaap_SegmentDomain_91641d10-a536-4f77-8abc-c0e891976421" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_SemiconductorSystemsMember_87c50c65-220d-4f7d-bf09-75bb6d6d3a03" xlink:href="amat-20211031.xsd#amat_SemiconductorSystemsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_91641d10-a536-4f77-8abc-c0e891976421" xlink:to="loc_amat_SemiconductorSystemsMember_87c50c65-220d-4f7d-bf09-75bb6d6d3a03" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_8e9f30c8-2a15-4b54-a5ed-2e2f221031de" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_6aac10b2-6236-40e2-8bf6-6111d1714051" xlink:to="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_8e9f30c8-2a15-4b54-a5ed-2e2f221031de" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_8e9f30c8-2a15-4b54-a5ed-2e2f221031de_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_8e9f30c8-2a15-4b54-a5ed-2e2f221031de" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_8e9f30c8-2a15-4b54-a5ed-2e2f221031de_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_cd7148cd-5d00-4f85-b04e-fa02884aa58f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_8e9f30c8-2a15-4b54-a5ed-2e2f221031de" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_cd7148cd-5d00-4f85-b04e-fa02884aa58f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SalesRevenueNetMember_572297c8-f93a-4f40-8208-d482082e254b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SalesRevenueNetMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_cd7148cd-5d00-4f85-b04e-fa02884aa58f" xlink:to="loc_us-gaap_SalesRevenueNetMember_572297c8-f93a-4f40-8208-d482082e254b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_07fd4e4b-0500-4bc9-929a-9204c7a80bed" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_6aac10b2-6236-40e2-8bf6-6111d1714051" xlink:to="loc_srt_ProductOrServiceAxis_07fd4e4b-0500-4bc9-929a-9204c7a80bed" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_07fd4e4b-0500-4bc9-929a-9204c7a80bed_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_07fd4e4b-0500-4bc9-929a-9204c7a80bed" xlink:to="loc_srt_ProductsAndServicesDomain_07fd4e4b-0500-4bc9-929a-9204c7a80bed_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_3f6dccc8-cc62-48d7-8195-7044bd28501d" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_07fd4e4b-0500-4bc9-929a-9204c7a80bed" xlink:to="loc_srt_ProductsAndServicesDomain_3f6dccc8-cc62-48d7-8195-7044bd28501d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_FoundryLogicAndOtherMember_bc55e6e6-8237-46fc-b1ed-3f9b57890c85" xlink:href="amat-20211031.xsd#amat_FoundryLogicAndOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_3f6dccc8-cc62-48d7-8195-7044bd28501d" xlink:to="loc_amat_FoundryLogicAndOtherMember_bc55e6e6-8237-46fc-b1ed-3f9b57890c85" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_DynamicRandomAccessMemoryMember_0ee3609e-5321-4b38-a3b6-eab1c6fbace7" xlink:href="amat-20211031.xsd#amat_DynamicRandomAccessMemoryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_3f6dccc8-cc62-48d7-8195-7044bd28501d" xlink:to="loc_amat_DynamicRandomAccessMemoryMember_0ee3609e-5321-4b38-a3b6-eab1c6fbace7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_FlashMemoryMember_c37eb333-3ebc-487c-8d63-19243355c056" xlink:href="amat-20211031.xsd#amat_FlashMemoryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_3f6dccc8-cc62-48d7-8195-7044bd28501d" xlink:to="loc_amat_FlashMemoryMember_c37eb333-3ebc-487c-8d63-19243355c056" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByTypeAxis_028b309b-ae5d-4509-a99f-5670f8203612" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ConcentrationRiskByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_6aac10b2-6236-40e2-8bf6-6111d1714051" xlink:to="loc_us-gaap_ConcentrationRiskByTypeAxis_028b309b-ae5d-4509-a99f-5670f8203612" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_028b309b-ae5d-4509-a99f-5670f8203612_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_028b309b-ae5d-4509-a99f-5670f8203612" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_028b309b-ae5d-4509-a99f-5670f8203612_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_15393e32-0f88-4bfc-981e-6b55e0463cea" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_028b309b-ae5d-4509-a99f-5670f8203612" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_15393e32-0f88-4bfc-981e-6b55e0463cea" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductConcentrationRiskMember_2e96bef9-02d7-40fe-8465-f24982b11ef0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProductConcentrationRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskTypeDomain_15393e32-0f88-4bfc-981e-6b55e0463cea" xlink:to="loc_us-gaap_ProductConcentrationRiskMember_2e96bef9-02d7-40fe-8465-f24982b11ef0" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/IndustrySegmentOperationsSegmentReconcilingItemsDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#IndustrySegmentOperationsSegmentReconcilingItemsDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/IndustrySegmentOperationsSegmentReconcilingItemsDetails" xlink:type="extended" id="i69b2990695a34352a845da9537f9e9dd_IndustrySegmentOperationsSegmentReconcilingItemsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_698dfe5c-7e61-4ac0-94a8-77b2a5ff4ed5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_d790aa8c-3ee7-456a-a41b-1e87c3b85fee" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_698dfe5c-7e61-4ac0-94a8-77b2a5ff4ed5" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_d790aa8c-3ee7-456a-a41b-1e87c3b85fee" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpenses_cddbeb77-dc8b-4a58-8c51-969ae6451f2c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CostsAndExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_698dfe5c-7e61-4ac0-94a8-77b2a5ff4ed5" xlink:to="loc_us-gaap_CostsAndExpenses_cddbeb77-dc8b-4a58-8c51-969ae6451f2c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_19214db4-7731-4cfa-be9b-8c2c73d7dc70" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_698dfe5c-7e61-4ac0-94a8-77b2a5ff4ed5" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_19214db4-7731-4cfa-be9b-8c2c73d7dc70" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_a8baa1e0-82f1-4ed7-9c84-cbd5ac03f27c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RestructuringCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_698dfe5c-7e61-4ac0-94a8-77b2a5ff4ed5" xlink:to="loc_us-gaap_RestructuringCharges_a8baa1e0-82f1-4ed7-9c84-cbd5ac03f27c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnContractTermination_d6af03e0-2989-43b8-a003-608cba2fdec3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GainLossOnContractTermination"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_698dfe5c-7e61-4ac0-94a8-77b2a5ff4ed5" xlink:to="loc_us-gaap_GainLossOnContractTermination_d6af03e0-2989-43b8-a003-608cba2fdec3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_1ec2ac9a-2cb4-4e6d-83fd-e8e4596d09d5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_698dfe5c-7e61-4ac0-94a8-77b2a5ff4ed5" xlink:to="loc_us-gaap_OperatingIncomeLoss_1ec2ac9a-2cb4-4e6d-83fd-e8e4596d09d5" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable_56a9c33c-d7bc-4493-8771-aac1878d7c53" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_698dfe5c-7e61-4ac0-94a8-77b2a5ff4ed5" xlink:to="loc_us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable_56a9c33c-d7bc-4493-8771-aac1878d7c53" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_8f335657-785b-4bec-92e1-57236013972a" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable_56a9c33c-d7bc-4493-8771-aac1878d7c53" xlink:to="loc_srt_ConsolidationItemsAxis_8f335657-785b-4bec-92e1-57236013972a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_8f335657-785b-4bec-92e1-57236013972a_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_8f335657-785b-4bec-92e1-57236013972a" xlink:to="loc_srt_ConsolidationItemsDomain_8f335657-785b-4bec-92e1-57236013972a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_fdfa2067-486a-4ccd-bbf8-b7a112fefc6d" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_8f335657-785b-4bec-92e1-57236013972a" xlink:to="loc_srt_ConsolidationItemsDomain_fdfa2067-486a-4ccd-bbf8-b7a112fefc6d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_CorporateAndReconcilingItemsMember_c7d456bb-db9e-4e9b-9212-18c17324ff81" xlink:href="amat-20211031.xsd#amat_CorporateAndReconcilingItemsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_fdfa2067-486a-4ccd-bbf8-b7a112fefc6d" xlink:to="loc_amat_CorporateAndReconcilingItemsMember_c7d456bb-db9e-4e9b-9212-18c17324ff81" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/IndustrySegmentOperationsNetSalesandLonglivedAssetsDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#IndustrySegmentOperationsNetSalesandLonglivedAssetsDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/IndustrySegmentOperationsNetSalesandLonglivedAssetsDetails" xlink:type="extended" id="ied3b4f28d3a34aef9c2b778f91fb7604_IndustrySegmentOperationsNetSalesandLonglivedAssetsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_93453504-c0b5-4203-bcfe-4a2195d3e8cc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_5e063f41-d31d-4549-8e39-74bd118ad8c1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_93453504-c0b5-4203-bcfe-4a2195d3e8cc" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_5e063f41-d31d-4549-8e39-74bd118ad8c1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncurrentAssets_2d2458bd-6b91-46e4-b0a4-7a0d6c046d26" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NoncurrentAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_93453504-c0b5-4203-bcfe-4a2195d3e8cc" xlink:to="loc_us-gaap_NoncurrentAssets_2d2458bd-6b91-46e4-b0a4-7a0d6c046d26" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_cb67ddc6-055e-461e-8a69-cfd743d04d6d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_93453504-c0b5-4203-bcfe-4a2195d3e8cc" xlink:to="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_cb67ddc6-055e-461e-8a69-cfd743d04d6d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_0cb73c21-0581-4c3a-ab32-eaeea2e5b7d0" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_cb67ddc6-055e-461e-8a69-cfd743d04d6d" xlink:to="loc_srt_StatementGeographicalAxis_0cb73c21-0581-4c3a-ab32-eaeea2e5b7d0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_0cb73c21-0581-4c3a-ab32-eaeea2e5b7d0_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_0cb73c21-0581-4c3a-ab32-eaeea2e5b7d0" xlink:to="loc_srt_SegmentGeographicalDomain_0cb73c21-0581-4c3a-ab32-eaeea2e5b7d0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_07a0dff5-261c-4da6-85e0-27b2fe24471b" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_0cb73c21-0581-4c3a-ab32-eaeea2e5b7d0" xlink:to="loc_srt_SegmentGeographicalDomain_07a0dff5-261c-4da6-85e0-27b2fe24471b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_d0dd41dc-694e-45de-9904-5429d9c1cc7e" xlink:href="https://xbrl.sec.gov/country/2021/country-2021.xsd#country_US"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_07a0dff5-261c-4da6-85e0-27b2fe24471b" xlink:to="loc_country_US_d0dd41dc-694e-45de-9904-5429d9c1cc7e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_CN_b2062956-cde7-4e80-aebb-ed7d5c2967f6" xlink:href="https://xbrl.sec.gov/country/2021/country-2021.xsd#country_CN"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_07a0dff5-261c-4da6-85e0-27b2fe24471b" xlink:to="loc_country_CN_b2062956-cde7-4e80-aebb-ed7d5c2967f6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_KR_429dfad6-463c-4854-b6af-6d4ded0ade99" xlink:href="https://xbrl.sec.gov/country/2021/country-2021.xsd#country_KR"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_07a0dff5-261c-4da6-85e0-27b2fe24471b" xlink:to="loc_country_KR_429dfad6-463c-4854-b6af-6d4ded0ade99" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_TW_d96709f2-9f1c-4ec4-b07d-d3a1c2b53ae0" xlink:href="https://xbrl.sec.gov/country/2021/country-2021.xsd#country_TW"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_07a0dff5-261c-4da6-85e0-27b2fe24471b" xlink:to="loc_country_TW_d96709f2-9f1c-4ec4-b07d-d3a1c2b53ae0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_JP_f66abffd-782a-49ce-b10a-46b627526c86" xlink:href="https://xbrl.sec.gov/country/2021/country-2021.xsd#country_JP"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_07a0dff5-261c-4da6-85e0-27b2fe24471b" xlink:to="loc_country_JP_f66abffd-782a-49ce-b10a-46b627526c86" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EuropeMember_be7c4ffc-afac-4be6-ae3e-feed31f35f1c" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_EuropeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_07a0dff5-261c-4da6-85e0-27b2fe24471b" xlink:to="loc_srt_EuropeMember_be7c4ffc-afac-4be6-ae3e-feed31f35f1c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_SoutheastAsiaMember_a68f6376-0fe2-4694-a7d5-d08a409eab4e" xlink:href="amat-20211031.xsd#amat_SoutheastAsiaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_07a0dff5-261c-4da6-85e0-27b2fe24471b" xlink:to="loc_amat_SoutheastAsiaMember_a68f6376-0fe2-4694-a7d5-d08a409eab4e" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_OutsideNorthAmericaMember_8835fa2f-b410-435b-9c78-ef1445dc90fa" xlink:href="amat-20211031.xsd#amat_OutsideNorthAmericaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_07a0dff5-261c-4da6-85e0-27b2fe24471b" xlink:to="loc_amat_OutsideNorthAmericaMember_8835fa2f-b410-435b-9c78-ef1445dc90fa" xlink:type="arc" order="7"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.appliedmaterials.com/role/IndustrySegmentOperationsPercentagebyCustomerDetails" xlink:type="simple" xlink:href="amat-20211031.xsd#IndustrySegmentOperationsPercentagebyCustomerDetails"/>
  <link:definitionLink xlink:role="http://www.appliedmaterials.com/role/IndustrySegmentOperationsPercentagebyCustomerDetails" xlink:type="extended" id="icaf9ee5de68c4e6092a25e3c05dc50c1_IndustrySegmentOperationsPercentagebyCustomerDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EntityWideRevenueMajorCustomerLineItems_1e1a1379-7581-4e5b-a6de-457e50ce4813" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EntityWideRevenueMajorCustomerLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_36520ae0-e698-4f4d-aea7-22e6da07314d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ConcentrationRiskPercentage1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideRevenueMajorCustomerLineItems_1e1a1379-7581-4e5b-a6de-457e50ce4813" xlink:to="loc_us-gaap_ConcentrationRiskPercentage1_36520ae0-e698-4f4d-aea7-22e6da07314d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_8bb5e6db-8ddf-4f35-878f-34ad43aadc5b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EntityWideRevenueMajorCustomerLineItems_1e1a1379-7581-4e5b-a6de-457e50ce4813" xlink:to="loc_us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_8bb5e6db-8ddf-4f35-878f-34ad43aadc5b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_20a8398f-3dbc-4223-8409-83725d3e18e0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_8bb5e6db-8ddf-4f35-878f-34ad43aadc5b" xlink:to="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_20a8398f-3dbc-4223-8409-83725d3e18e0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_20a8398f-3dbc-4223-8409-83725d3e18e0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_20a8398f-3dbc-4223-8409-83725d3e18e0" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_20a8398f-3dbc-4223-8409-83725d3e18e0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_29415ede-2f23-40be-b5fc-6ad0688dee8f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_20a8398f-3dbc-4223-8409-83725d3e18e0" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_29415ede-2f23-40be-b5fc-6ad0688dee8f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SalesRevenueNetMember_4a5e1fc0-7e86-4f11-8482-4dc8d0e5694e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SalesRevenueNetMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_29415ede-2f23-40be-b5fc-6ad0688dee8f" xlink:to="loc_us-gaap_SalesRevenueNetMember_4a5e1fc0-7e86-4f11-8482-4dc8d0e5694e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByTypeAxis_a23e731c-4175-4430-a3d4-1ac79029b062" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ConcentrationRiskByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_8bb5e6db-8ddf-4f35-878f-34ad43aadc5b" xlink:to="loc_us-gaap_ConcentrationRiskByTypeAxis_a23e731c-4175-4430-a3d4-1ac79029b062" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_a23e731c-4175-4430-a3d4-1ac79029b062_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_a23e731c-4175-4430-a3d4-1ac79029b062" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_a23e731c-4175-4430-a3d4-1ac79029b062_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_24ecce3e-3e78-4ddd-aaef-01ad48b22c93" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_a23e731c-4175-4430-a3d4-1ac79029b062" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_24ecce3e-3e78-4ddd-aaef-01ad48b22c93" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerConcentrationRiskMember_93103238-7c3d-4f98-bba2-74a27fbbc4fd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CustomerConcentrationRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskTypeDomain_24ecce3e-3e78-4ddd-aaef-01ad48b22c93" xlink:to="loc_us-gaap_CustomerConcentrationRiskMember_93103238-7c3d-4f98-bba2-74a27fbbc4fd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MajorCustomersAxis_2968ac3b-9f95-410b-910c-3618f3ce7ea7" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_MajorCustomersAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_8bb5e6db-8ddf-4f35-878f-34ad43aadc5b" xlink:to="loc_srt_MajorCustomersAxis_2968ac3b-9f95-410b-910c-3618f3ce7ea7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_NameOfMajorCustomerDomain_2968ac3b-9f95-410b-910c-3618f3ce7ea7_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_NameOfMajorCustomerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_MajorCustomersAxis_2968ac3b-9f95-410b-910c-3618f3ce7ea7" xlink:to="loc_srt_NameOfMajorCustomerDomain_2968ac3b-9f95-410b-910c-3618f3ce7ea7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_NameOfMajorCustomerDomain_1d7fbc64-6bd6-4ade-afc9-4ca7c65b7ab9" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_NameOfMajorCustomerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_MajorCustomersAxis_2968ac3b-9f95-410b-910c-3618f3ce7ea7" xlink:to="loc_srt_NameOfMajorCustomerDomain_1d7fbc64-6bd6-4ade-afc9-4ca7c65b7ab9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_SamsungElectronicsCo.Ltd.Member_db8aa124-c3b8-4817-b2e3-3b0a65947f43" xlink:href="amat-20211031.xsd#amat_SamsungElectronicsCo.Ltd.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_1d7fbc64-6bd6-4ade-afc9-4ca7c65b7ab9" xlink:to="loc_amat_SamsungElectronicsCo.Ltd.Member_db8aa124-c3b8-4817-b2e3-3b0a65947f43" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_TaiwanSemiconductorManufacturingCompanyLimitedMember_ad5345aa-74f5-4b19-9c4c-0d1704c29b0a" xlink:href="amat-20211031.xsd#amat_TaiwanSemiconductorManufacturingCompanyLimitedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_1d7fbc64-6bd6-4ade-afc9-4ca7c65b7ab9" xlink:to="loc_amat_TaiwanSemiconductorManufacturingCompanyLimitedMember_ad5345aa-74f5-4b19-9c4c-0d1704c29b0a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_amat_IntelCorporationMember_0b7a6ed4-401c-4d33-938a-0aa14d252e24" xlink:href="amat-20211031.xsd#amat_IntelCorporationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_1d7fbc64-6bd6-4ade-afc9-4ca7c65b7ab9" xlink:to="loc_amat_IntelCorporationMember_0b7a6ed4-401c-4d33-938a-0aa14d252e24" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://fasb.org/us-gaap/role/eedm/ExtensibleEnumerationLists" xlink:type="simple" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-roles-2021-01-31.xsd#eedm"/>
  <link:definitionLink xlink:role="http://fasb.org/us-gaap/role/eedm/ExtensibleEnumerationLists" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AssetsAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxesAndOtherAssetsNoncurrent" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredIncomeTaxesAndOtherAssetsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract" xlink:to="loc_us-gaap_DeferredIncomeTaxesAndOtherAssetsNoncurrent" xlink:type="arc" order="0"/>
  </link:definitionLink>
</link:linkbase>
