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

 

attenuate

 verb
verb
BrE BrE//əˈtenjueɪt//
 
; NAmE NAmE//əˈtenjueɪt//
 
Verb Forms present simple I / you / we / they attenuate
BrE BrE//əˈtenjueɪt//
 
; NAmE NAmE//əˈtenjueɪt//
 
he / she / it attenuates
BrE BrE//əˈtenjueɪts//
 
; NAmE NAmE//əˈtenjueɪts//
 
past simple attenuated
BrE BrE//əˈtenjueɪtɪd//
 
; NAmE NAmE//əˈtenjueɪtɪd//
 
past participle attenuated
BrE BrE//əˈtenjueɪtɪd//
 
; NAmE NAmE//əˈtenjueɪtɪd//
 
-ing form attenuating
BrE BrE//əˈtenjueɪtɪŋ//
 
; NAmE NAmE//əˈtenjueɪtɪŋ//
 
 
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attenuate something (formal) to make something weaker or less effective The drug attenuates the effects of the virus. Word Origin mid 16th cent.: from Latin attenuat- ‘made slender’, from the verb attenuare, from ad- ‘to’ + tenuare ‘make thin’ (from tenuis ‘thin’).
See the Oxford Advanced American Dictionary entry: attenuate