<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31432034</termId><termName>aqueducts</termName><termType>PT</termType><termNote><![CDATA[ Man-made conduits for carrying water over long distances, usually by means of gravity, particularly structures that include channels and elevated sections on bridgelike structures, optimized by the Romans and based on inventions of earlier cultures. The term derives from Latin aqua, meaning "water," and ducere, meaning "to lead." In modern engineering, the term refers to any system of pipes, ditches, canals, tunnels, and supporting structures used to convey water from its source to its main distribution point.  ]]></termNote><termCreatedDate>2026-03-30 20:56:33</termCreatedDate><relation><relationType>UF</relationType><termId>31432035</termId><termName>aqueduct</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31432036</termId><termName>aqueduct bridges</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31432037</termId><termName>canal aqueducts</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31432038</termId><termName>canal bridges</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31416912</termId><termName>water distribution structures</termName><termType>PT</termType></relation><relation><relationType>BT</relationType><termId>31402783</termId><termName>man-made hydrographic features</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31452930</termId><termName>qanats</termName><termType>PT</termType></relation></term>  </Zthes>