Definition of defoliate verb from the Oxford Advanced Learner's Dictionary

 

defoliate

 verb
verb
BrE BrE//ˌdiːˈfəʊlieɪt//
 
; NAmE NAmE//ˌdiːˈfoʊlieɪt//
 
Verb Forms present simple I / you / we / they defoliate
BrE BrE//ˌdiːˈfəʊlieɪt//
 
; NAmE NAmE//ˌdiːˈfoʊlieɪt//
 
he / she / it defoliates
BrE BrE//ˌdiːˈfəʊlieɪts//
 
; NAmE NAmE//ˌdiːˈfoʊlieɪts//
 
past simple defoliated
BrE BrE//ˌdiːˈfəʊlieɪtɪd//
 
; NAmE NAmE//ˌdiːˈfoʊlieɪtɪd//
 
past participle defoliated
BrE BrE//ˌdiːˈfəʊlieɪtɪd//
 
; NAmE NAmE//ˌdiːˈfoʊlieɪtɪd//
 
-ing form defoliating
BrE BrE//ˌdiːˈfəʊlieɪtɪŋ//
 
; NAmE NAmE//ˌdiːˈfoʊlieɪtɪŋ//
 
 
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defoliate something (specialist) to destroy the leaves of trees or plants, especially with chemicals Word Origin late 18th cent.: from late Latin defoliat- ‘stripped of leaves’, from the verb defoliare, from de- (expressing removal) + folium ‘leaf’.
See the Oxford Advanced American Dictionary entry: defoliate