<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31303880</termId><termName>oil</termName><termType>PT</termType><termNote><![CDATA[ Any greasy substance that is liquid at room temperature and insoluble in water. Fixed (nonvolatile) oils have the same chemical composition as fats: they consist chiefly of glycerides, resulting from a reaction between glycerol and fatty acids. Oils may be divided by function and type: mineral (e.g., paraffin), vegetable (e.g., linseed), animal (e.g., fish), essential (e.g., turpentine), or edible (e.g., olive). ]]></termNote><termCreatedDate>2026-03-30 20:21:43</termCreatedDate><relation><relationType>UF</relationType><termId>31303881</termId><termName>oils</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31298623</termId><termName>organic material</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31316709</termId><termName>[oil by composition or origin]</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31316710</termId><termName>[oil by form or function]</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31316711</termId><termName>[oil by technique]</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31316712</termId><termName>[oil by property]</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31391867</termId><termName>oil keepers</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31416224</termId><termName>oil-fired power plants</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31386557</termId><termName>oil heaters</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31386559</termId><termName>oil heating stoves</termName><termType>PT</termType></relation></term>  </Zthes>