<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31317706</termId><termName>combustion</termName><termType>PT</termType><termNote><![CDATA[ Refers to the initial act or instance of burning and for the chemical processes in which light or heat are produced by the vigorous union of various substances with oxygen. ]]></termNote><termCreatedDate>2026-03-30 20:25:33</termCreatedDate><relation><relationType>BT</relationType><termId>31304713</termId><termName>burning</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31299869</termId><termName>fire</termName><termType>PT</termType></relation></term>  </Zthes>