单词	defoliant
释义	defoliantde‧fo‧li‧ant /diːˈfəʊliənt $ -ˈfoʊ-/ noun [countable, uncountable] formal Word Origin WORD ORIGINdefoliant Origin: 1900-2000 Medieval Latin defoliare, from Latin folium ‘leaf’ Examples EXAMPLES FROM THE CORPUS Chemical defoliants would not be used against crops, nor would producers be arrested or property confiscated. a chemical substance, used especially in war, that makes all the leaves of plants drop off
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