<?xml version="1.0" encoding="US-ASCII"?>
<!-- Generated by Broadridge Transform (tm) - http://www.broadridge.com -->
<!-- Created: Thu Jul 09 07:14:23 UTC 2026 -->
<linkbase xmlns="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" 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:xbrldt="http://xbrl.org/2005/xbrldt">
  <roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#SeriesOnly" roleURI="http://xbrl.sec.gov/oef/role/SeriesOnly"/>
  <arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default" arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default"/>
  <arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain" arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain"/>
  <arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension" arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension"/>
  <arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member" arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member"/>
  <arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all" arcroleURI="http://xbrl.org/int/dim/arcrole/all"/>
  <definitionLink xlink:role="http://xbrl.sec.gov/oef/role/SeriesOnly" xlink:type="extended">
    <loc xlink:type="locator" xlink:label="dei_EntityDomain" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <loc xlink:type="locator" xlink:label="ck0001579982_S000042978Member" xlink:href="ck0001579982-20251130.xsd#ck0001579982_S000042978Member"/>
<!-- [WMV7][slpcT6ROeJfESSclhPB2KPehAuCHmynNja+vpHKVK4kWiAxMNU4X9JXYNKF4B7tJ5hau6fMtJbUWezuZ7uWBlp+7YdwA0NId4iT+82MYnAJdcpYFN/q3roslBYrDe8hhPmPMKss8J1HM7mMP9FSRM8RdZv7Rwu7h+mmD37KKMPkMzZ43ZZxdqVYPchugKUx5WTUVEyHyHoTQiGVhp3gjyPnrBpa7jd1lPpgnLO3IZ+5i7e45oGjg/2KDxmTjpZEnIYFRnses3WAsyEOXnWDKOLEnqDR1Au5tm8B7MqaiolSiDYve9eHbHH2p2ttCzFUCP/KBr6eHbQRwwGI=] CSR-->
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="ck0001579982_S000042978Member" order="11" xbrldt:closed="true"/>
  </definitionLink>
</linkbase>
