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BNC: 46600 COCA: 39413

defoliant

de·fo·li·ant /diːˈfəʊliənt $ -ˈfoʊ-/ noun [countableC, uncountableU] formal  
HBPa chemical substance, used especially in war, that makes all the leaves of plants drop off 脱叶剂〔尤在战争中使用〕
Examples from the Corpus
Origin defoliant
(1900-2000) Medieval Latin defoliare, from Latin folium leaf
de·fo·li·ant noun
Chinese
Syllable
Corpus
BNC: 46600 COCA: 39413
BNC: 46600 COCA: 39413
BNC: 46600 COCA: 39413
defoliant
Chemical substances used for a specific purpose: agar, antifreeze, antioxidant...

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