<?xml version="1.0" encoding="UTF-8"?>
<!-- Generated by Fujitsu Interstage XWand B0254 -->
<!-- Generated by Broadridge Financial Solutions Inc -->
<link:linkbase xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:stanley="http://stanley/20260430" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xlink="http://www.w3.org/1999/xlink">
  <link:roleRef roleURI="http://xbrl.sec.gov/rr/role/ProspectusOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ProspectusOnly"/>
  <link:roleRef roleURI="http://xbrl.sec.gov/oef/role/SeriesOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#SeriesOnly"/>
  <link:roleRef roleURI="http://xbrl.sec.gov/oef/role/ClassOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ClassOnly"/>
  <link:roleRef roleURI="http://xbrl.sec.gov/rr/role/RiskOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#RiskOnly"/>
  <link:roleRef roleURI="http://xbrl.sec.gov/rr/role/PerformanceMeasureOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#PerformanceMeasureOnly"/>
  <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/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/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <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:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/rr/role/ProspectusOnly">
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentDomain" xlink:label="DocumentDomain"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_Dmsifcounterpointglobalportfoliosbpspapril_17308Member" xlink:label="Dmsifcounterpointglobalportfoliosbpspapril_17308Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DocumentDomain" xlink:to="Dmsifcounterpointglobalportfoliosbpspapril_17308Member" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_Dmsifopportunityportfoliosbpspapril_17270Member" xlink:label="Dmsifopportunityportfoliosbpspapril_17270Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DocumentDomain" xlink:to="Dmsifopportunityportfoliosbpspapril_17270Member" use="optional" order="2.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_Dmsifappliedequityportfoliosbpspapril_17260Member" xlink:label="Dmsifappliedequityportfoliosbpspapril_17260Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DocumentDomain" xlink:to="Dmsifappliedequityportfoliosbpspapril_17260Member" use="optional" order="3.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_Dmsifgrowthportfolioclassirbpspapril_17265Member" xlink:label="Dmsifgrowthportfolioclassirbpspapril_17265Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DocumentDomain" xlink:to="Dmsifgrowthportfolioclassirbpspapril_17265Member" use="optional" order="4.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_Dmsifopportunityportfoliosclassirbpspapril_17277Member" xlink:label="Dmsifopportunityportfoliosclassirbpspapril_17277Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DocumentDomain" xlink:to="Dmsifopportunityportfoliosclassirbpspapril_17277Member" use="optional" order="5.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_Dmsifemergingmarketsequitybpspapril_17301Member" xlink:label="Dmsifemergingmarketsequitybpspapril_17301Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DocumentDomain" xlink:to="Dmsifemergingmarketsequitybpspapril_17301Member" use="optional" order="6.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_Dmsifemergingmarketsequityirbpspapril_17295Member" xlink:label="Dmsifemergingmarketsequityirbpspapril_17295Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DocumentDomain" xlink:to="Dmsifemergingmarketsequityirbpspapril_17295Member" use="optional" order="7.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_Dmsifinternationalequitypspbapril_17280Member" xlink:label="Dmsifinternationalequitypspbapril_17280Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DocumentDomain" xlink:to="Dmsifinternationalequitypspbapril_17280Member" use="optional" order="8.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_Dmsifbsaiapril_17012Member" xlink:label="Dmsifbsaiapril_17012Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DocumentDomain" xlink:to="Dmsifbsaiapril_17012Member" use="optional" order="9.0"/>
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/SeriesOnly">
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_S000027993Member" xlink:label="S000027993Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="S000027993Member" use="optional" order="2.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_S000063049Member" xlink:label="S000063049Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="S000063049Member" use="optional" order="3.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_S000030616Member" xlink:label="S000030616Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="S000030616Member" use="optional" order="4.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_S000065236Member" xlink:label="S000065236Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="S000065236Member" use="optional" order="5.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_S000002828Member" xlink:label="S000002828Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="S000002828Member" use="optional" order="6.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_S000002825Member" xlink:label="S000002825Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="S000002825Member" use="optional" order="7.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_S000068163Member" xlink:label="S000068163Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="S000068163Member" use="optional" order="8.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_S000074797Member" xlink:label="S000074797Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="S000074797Member" use="optional" order="9.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_S000051832Member" xlink:label="S000051832Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="S000051832Member" use="optional" order="10.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_S000067259Member" xlink:label="S000067259Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="S000067259Member" use="optional" order="11.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_S000027995Member" xlink:label="S000027995Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="S000027995Member" use="optional" order="12.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_S000030618Member" xlink:label="S000030618Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="S000030618Member" use="optional" order="13.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_S000027992Member" xlink:label="S000027992Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="S000027992Member" use="optional" order="14.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_S000053786Member" xlink:label="S000053786Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="S000053786Member" use="optional" order="15.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_S000053787Member" xlink:label="S000053787Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="S000053787Member" use="optional" order="16.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_S000053789Member" xlink:label="S000053789Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="S000053789Member" use="optional" order="17.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_S000002820Member" xlink:label="S000002820Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="S000002820Member" use="optional" order="18.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_S000047473Member" xlink:label="S000047473Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="S000047473Member" use="optional" order="19.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_S000002826Member" xlink:label="S000002826Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="S000002826Member" use="optional" order="20.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_S000076838Member" xlink:label="S000076838Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="S000076838Member" use="optional" order="21.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_S000002830Member" xlink:label="S000002830Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="S000002830Member" use="optional" order="22.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_S000041864Member" xlink:label="S000041864Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="S000041864Member" use="optional" order="23.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_S000002832Member" xlink:label="S000002832Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="S000002832Member" use="optional" order="24.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_S000076842Member" xlink:label="S000076842Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="S000076842Member" use="optional" order="25.0"/>
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/ClassOnly">
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_ShareClassDomain" xlink:label="ShareClassDomain"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000085091Member" xlink:label="C000085091Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000085091Member" use="optional" order="2.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000204520Member" xlink:label="C000204520Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000204520Member" use="optional" order="3.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000094891Member" xlink:label="C000094891Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000094891Member" use="optional" order="4.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000211168Member" xlink:label="C000211168Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000211168Member" use="optional" order="5.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000007750Member" xlink:label="C000007750Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000007750Member" use="optional" order="6.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000007744Member" xlink:label="C000007744Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000007744Member" use="optional" order="7.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000218317Member" xlink:label="C000218317Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000218317Member" use="optional" order="8.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000233002Member" xlink:label="C000233002Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000233002Member" use="optional" order="9.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000163120Member" xlink:label="C000163120Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000163120Member" use="optional" order="10.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000216354Member" xlink:label="C000216354Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000216354Member" use="optional" order="11.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000085098Member" xlink:label="C000085098Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000085098Member" use="optional" order="12.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000094898Member" xlink:label="C000094898Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000094898Member" use="optional" order="13.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000085087Member" xlink:label="C000085087Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000085087Member" use="optional" order="14.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000169208Member" xlink:label="C000169208Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000169208Member" use="optional" order="15.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000169212Member" xlink:label="C000169212Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000169212Member" use="optional" order="16.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000169220Member" xlink:label="C000169220Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000169220Member" use="optional" order="17.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000007736Member" xlink:label="C000007736Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000007736Member" use="optional" order="18.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000149047Member" xlink:label="C000149047Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000149047Member" use="optional" order="19.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000007746Member" xlink:label="C000007746Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000007746Member" use="optional" order="20.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000236914Member" xlink:label="C000236914Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000236914Member" use="optional" order="21.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000007754Member" xlink:label="C000007754Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000007754Member" use="optional" order="22.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000129960Member" xlink:label="C000129960Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000129960Member" use="optional" order="23.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000007758Member" xlink:label="C000007758Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000007758Member" use="optional" order="24.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000236927Member" xlink:label="C000236927Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000236927Member" use="optional" order="25.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000085093Member" xlink:label="C000085093Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000085093Member" use="optional" order="26.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000204518Member" xlink:label="C000204518Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000204518Member" use="optional" order="27.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000094893Member" xlink:label="C000094893Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000094893Member" use="optional" order="28.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000211166Member" xlink:label="C000211166Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000211166Member" use="optional" order="29.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000007751Member" xlink:label="C000007751Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000007751Member" use="optional" order="30.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000007745Member" xlink:label="C000007745Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000007745Member" use="optional" order="31.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000218315Member" xlink:label="C000218315Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000218315Member" use="optional" order="32.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000233003Member" xlink:label="C000233003Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000233003Member" use="optional" order="33.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000163121Member" xlink:label="C000163121Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000163121Member" use="optional" order="34.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000216355Member" xlink:label="C000216355Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000216355Member" use="optional" order="35.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000085100Member" xlink:label="C000085100Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000085100Member" use="optional" order="36.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000094900Member" xlink:label="C000094900Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000094900Member" use="optional" order="37.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000085089Member" xlink:label="C000085089Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000085089Member" use="optional" order="38.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000169209Member" xlink:label="C000169209Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000169209Member" use="optional" order="39.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000169213Member" xlink:label="C000169213Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000169213Member" use="optional" order="40.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000169221Member" xlink:label="C000169221Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000169221Member" use="optional" order="41.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000007737Member" xlink:label="C000007737Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000007737Member" use="optional" order="42.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000149048Member" xlink:label="C000149048Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000149048Member" use="optional" order="43.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000007747Member" xlink:label="C000007747Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000007747Member" use="optional" order="44.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000236912Member" xlink:label="C000236912Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000236912Member" use="optional" order="45.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000007755Member" xlink:label="C000007755Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000007755Member" use="optional" order="46.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000129961Member" xlink:label="C000129961Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000129961Member" use="optional" order="47.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000007759Member" xlink:label="C000007759Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000007759Member" use="optional" order="48.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000236930Member" xlink:label="C000236930Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000236930Member" use="optional" order="49.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000085092Member" xlink:label="C000085092Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000085092Member" use="optional" order="50.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000204519Member" xlink:label="C000204519Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000204519Member" use="optional" order="51.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000094892Member" xlink:label="C000094892Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000094892Member" use="optional" order="52.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000211167Member" xlink:label="C000211167Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000211167Member" use="optional" order="53.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000113805Member" xlink:label="C000113805Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000113805Member" use="optional" order="54.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000104303Member" xlink:label="C000104303Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000104303Member" use="optional" order="55.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000218316Member" xlink:label="C000218316Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000218316Member" use="optional" order="56.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000233004Member" xlink:label="C000233004Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000233004Member" use="optional" order="57.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000163122Member" xlink:label="C000163122Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000163122Member" use="optional" order="58.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000216357Member" xlink:label="C000216357Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000216357Member" use="optional" order="59.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000085099Member" xlink:label="C000085099Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000085099Member" use="optional" order="60.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000094899Member" xlink:label="C000094899Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000094899Member" use="optional" order="61.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000085088Member" xlink:label="C000085088Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000085088Member" use="optional" order="62.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000169210Member" xlink:label="C000169210Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000169210Member" use="optional" order="63.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000169214Member" xlink:label="C000169214Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000169214Member" use="optional" order="64.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000169222Member" xlink:label="C000169222Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000169222Member" use="optional" order="65.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000113799Member" xlink:label="C000113799Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000113799Member" use="optional" order="66.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000155912Member" xlink:label="C000155912Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000155912Member" use="optional" order="67.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000113803Member" xlink:label="C000113803Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000113803Member" use="optional" order="68.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000236913Member" xlink:label="C000236913Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000236913Member" use="optional" order="69.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000113809Member" xlink:label="C000113809Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000113809Member" use="optional" order="70.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000129962Member" xlink:label="C000129962Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000129962Member" use="optional" order="71.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000113811Member" xlink:label="C000113811Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000113811Member" use="optional" order="72.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000236928Member" xlink:label="C000236928Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000236928Member" use="optional" order="73.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000155898Member" xlink:label="C000155898Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000155898Member" use="optional" order="74.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000204517Member" xlink:label="C000204517Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000204517Member" use="optional" order="75.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000155902Member" xlink:label="C000155902Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000155902Member" use="optional" order="76.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000211165Member" xlink:label="C000211165Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000211165Member" use="optional" order="77.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000155892Member" xlink:label="C000155892Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000155892Member" use="optional" order="78.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000155889Member" xlink:label="C000155889Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000155889Member" use="optional" order="79.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000218314Member" xlink:label="C000218314Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000218314Member" use="optional" order="80.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000233005Member" xlink:label="C000233005Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000233005Member" use="optional" order="81.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000163123Member" xlink:label="C000163123Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000163123Member" use="optional" order="82.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000216356Member" xlink:label="C000216356Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000216356Member" use="optional" order="83.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000155900Member" xlink:label="C000155900Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000155900Member" use="optional" order="84.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000155904Member" xlink:label="C000155904Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000155904Member" use="optional" order="85.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000155897Member" xlink:label="C000155897Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000155897Member" use="optional" order="86.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000169211Member" xlink:label="C000169211Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000169211Member" use="optional" order="87.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000169215Member" xlink:label="C000169215Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000169215Member" use="optional" order="88.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000169223Member" xlink:label="C000169223Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000169223Member" use="optional" order="89.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000155887Member" xlink:label="C000155887Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000155887Member" use="optional" order="90.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000149050Member" xlink:label="C000149050Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000149050Member" use="optional" order="91.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000155890Member" xlink:label="C000155890Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000155890Member" use="optional" order="92.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000236911Member" xlink:label="C000236911Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000236911Member" use="optional" order="93.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000155893Member" xlink:label="C000155893Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000155893Member" use="optional" order="94.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000155911Member" xlink:label="C000155911Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000155911Member" use="optional" order="95.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000155894Member" xlink:label="C000155894Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000155894Member" use="optional" order="96.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000236929Member" xlink:label="C000236929Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000236929Member" use="optional" order="97.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000114470Member" xlink:label="C000114470Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000114470Member" use="optional" order="98.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000227605Member" xlink:label="C000227605Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000227605Member" use="optional" order="99.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000126914Member" xlink:label="C000126914Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000126914Member" use="optional" order="100.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000129402Member" xlink:label="C000129402Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000129402Member" use="optional" order="101.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000126921Member" xlink:label="C000126921Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000126921Member" use="optional" order="102.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000198826Member" xlink:label="C000198826Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000198826Member" use="optional" order="103.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000126918Member" xlink:label="C000126918Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000126918Member" use="optional" order="104.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000215548Member" xlink:label="C000215548Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000215548Member" use="optional" order="105.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000226932Member" xlink:label="C000226932Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000226932Member" use="optional" order="106.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000126912Member" xlink:label="C000126912Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000126912Member" use="optional" order="107.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000156276Member" xlink:label="C000156276Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000156276Member" use="optional" order="108.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000129963Member" xlink:label="C000129963Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000129963Member" use="optional" order="109.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000126915Member" xlink:label="C000126915Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000126915Member" use="optional" order="110.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000126919Member" xlink:label="C000126919Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000126919Member" use="optional" order="111.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000198816Member" xlink:label="C000198816Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000198816Member" use="optional" order="112.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000198822Member" xlink:label="C000198822Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000198822Member" use="optional" order="113.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000198820Member" xlink:label="C000198820Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000198820Member" use="optional" order="114.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000215549Member" xlink:label="C000215549Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000215549Member" use="optional" order="115.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C000198815Member" xlink:label="C000198815Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000198815Member" use="optional" order="116.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C001254800Member" xlink:label="C001254800Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C001254800Member" use="optional" order="117.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_C002145045Member" xlink:label="C002145045Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C002145045Member" use="optional" order="118.0"/>
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/rr/role/PerformanceMeasureOnly">
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_PerformanceMeasureDomain" xlink:label="PerformanceMeasureDomain"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_benchmark110Member" xlink:label="benchmark110Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="benchmark110Member" use="optional" order="1175.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_benchmark122Member" xlink:label="benchmark122Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="benchmark122Member" use="optional" order="1177.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_benchmark123Member" xlink:label="benchmark123Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="benchmark123Member" use="optional" order="1178.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_benchmark119Member" xlink:label="benchmark119Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="benchmark119Member" use="optional" order="1179.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_bench20250429500Member" xlink:label="bench20250429500Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="bench20250429500Member" use="optional" order="11711.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_bench20220420139Member" xlink:label="bench20220420139Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="bench20220420139Member" use="optional" order="11712.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_benchmark132Member" xlink:label="benchmark132Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="benchmark132Member" use="optional" order="11713.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_benchmark104Member" xlink:label="benchmark104Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="benchmark104Member" use="optional" order="11715.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_benchmark136Member" xlink:label="benchmark136Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="benchmark136Member" use="optional" order="11718.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_benchmark114Member" xlink:label="benchmark114Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="benchmark114Member" use="optional" order="11719.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_bench20240412436Member" xlink:label="bench20240412436Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="bench20240412436Member" use="optional" order="11721.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_benchmark109Member" xlink:label="benchmark109Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="benchmark109Member" use="optional" order="11725.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_benchmark140Member" xlink:label="benchmark140Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="benchmark140Member" use="optional" order="11728.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_benchmark134Member" xlink:label="benchmark134Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="benchmark134Member" use="optional" order="11729.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_benchmark66Member" xlink:label="benchmark66Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="benchmark66Member" use="optional" order="11734.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_bench20240412428Member" xlink:label="bench20240412428Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="bench20240412428Member" use="optional" order="11751.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_bench20230420239Member" xlink:label="bench20230420239Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="bench20230420239Member" use="optional" order="11752.0"/>
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/rr/role/RiskOnly">
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_AllRisksMember" xlink:label="oef_AllRisksMember"/>
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FixedIncomeSecuritiesMember" xlink:label="us-gaap_FixedIncomeSecuritiesMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="us-gaap_FixedIncomeSecuritiesMember" order="11.0" xbrldt:closed="true"/>
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MortgageBackedSecuritiesMember" xlink:label="us-gaap_MortgageBackedSecuritiesMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="us-gaap_MortgageBackedSecuritiesMember" order="15.0" xbrldt:closed="true"/>
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CollateralizedMortgageObligationsMember" xlink:label="us-gaap_CollateralizedMortgageObligationsMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="us-gaap_CollateralizedMortgageObligationsMember" order="16.0" xbrldt:closed="true"/>
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommercialMortgageBackedSecuritiesMember" xlink:label="us-gaap_CommercialMortgageBackedSecuritiesMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="us-gaap_CommercialMortgageBackedSecuritiesMember" order="18.0" xbrldt:closed="true"/>
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetBackedSecuritiesMember" xlink:label="us-gaap_AssetBackedSecuritiesMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="us-gaap_AssetBackedSecuritiesMember" order="20.0" xbrldt:closed="true"/>
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SovereignDebtSecuritiesMember" xlink:label="us-gaap_SovereignDebtSecuritiesMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="us-gaap_SovereignDebtSecuritiesMember" order="25.0" xbrldt:closed="true"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_bench20230407201Member" xlink:label="bench20230407201Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="bench20230407201Member" use="optional" order="1174.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_bench20230407204Member" xlink:label="bench20230407204Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="bench20230407204Member" use="optional" order="1175.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_bench20230420228Member" xlink:label="bench20230420228Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="bench20230420228Member" use="optional" order="1176.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_bench20230420235Member" xlink:label="bench20230420235Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="bench20230420235Member" use="optional" order="1177.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_bench20230407199Member" xlink:label="bench20230407199Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="bench20230407199Member" use="optional" order="1178.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_bench20230407205Member" xlink:label="bench20230407205Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="bench20230407205Member" use="optional" order="1179.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_bench20250124468Member" xlink:label="bench20250124468Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="bench20250124468Member" use="optional" order="11710.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_bench20230407203Member" xlink:label="bench20230407203Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="bench20230407203Member" use="optional" order="11711.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_bench20230420230Member" xlink:label="bench20230420230Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="bench20230420230Member" use="optional" order="11712.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_bench20230420232Member" xlink:label="bench20230420232Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="bench20230420232Member" use="optional" order="11713.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_bench20250428495Member" xlink:label="bench20250428495Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="bench20250428495Member" use="optional" order="11714.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_bench20230420233Member" xlink:label="bench20230420233Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="bench20230420233Member" use="optional" order="11715.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_bench20250415493Member" xlink:label="bench20250415493Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="bench20250415493Member" use="optional" order="11716.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_bench20230411215Member" xlink:label="bench20230411215Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="bench20230411215Member" use="optional" order="11717.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_bench20250428496Member" xlink:label="bench20250428496Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="bench20250428496Member" use="optional" order="11718.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_bench20230407187Member" xlink:label="bench20230407187Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="bench20230407187Member" use="optional" order="11719.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_bench20230407189Member" xlink:label="bench20230407189Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="bench20230407189Member" use="optional" order="11720.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_bench20240125416Member" xlink:label="bench20240125416Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="bench20240125416Member" use="optional" order="11721.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_bench20230407192Member" xlink:label="bench20230407192Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="bench20230407192Member" use="optional" order="11722.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_bench20231002310Member" xlink:label="bench20231002310Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="bench20231002310Member" use="optional" order="11723.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_bench20250428494Member" xlink:label="bench20250428494Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="bench20250428494Member" use="optional" order="11724.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_bench20250428497Member" xlink:label="bench20250428497Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="bench20250428497Member" use="optional" order="11725.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_bench20250428498Member" xlink:label="bench20250428498Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="bench20250428498Member" use="optional" order="11726.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_bench20250428499Member" xlink:label="bench20250428499Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="bench20250428499Member" use="optional" order="11727.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_bench20230407191Member" xlink:label="bench20230407191Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="bench20230407191Member" use="optional" order="11728.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_bench20250124462Member" xlink:label="bench20250124462Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="bench20250124462Member" use="optional" order="11729.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_bench20230407186Member" xlink:label="bench20230407186Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="bench20230407186Member" use="optional" order="11730.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_bench20230407190Member" xlink:label="bench20230407190Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="bench20230407190Member" use="optional" order="11731.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_bench20230407175Member" xlink:label="bench20230407175Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="bench20230407175Member" use="optional" order="11732.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_bench20230407198Member" xlink:label="bench20230407198Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="bench20230407198Member" use="optional" order="11733.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_bench20230407174Member" xlink:label="bench20230407174Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="bench20230407174Member" use="optional" order="11734.0"/>
    <link:loc xlink:type="locator" xlink:href="stanley-20260430.xsd#stanley_bench20230407188Member" xlink:label="bench20230407188Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="bench20230407188Member" use="optional" order="11735.0"/>
  </link:definitionLink>
</link:linkbase>
