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

 

augment

 verb
verb
BrE BrE//ɔːɡˈment//
 
; NAmE NAmE//ɔːɡˈment//
 
Verb Forms present simple I / you / we / they augment
BrE BrE//ɔːɡˈment//
 
; NAmE NAmE//ɔːɡˈment//
 
he / she / it augments
BrE BrE//ɔːɡˈments//
 
; NAmE NAmE//ɔːɡˈments//
 
past simple augmented
BrE BrE//ɔːɡˈmentɪd//
 
; NAmE NAmE//ɔːɡˈmentɪd//
 
past participle augmented
BrE BrE//ɔːɡˈmentɪd//
 
; NAmE NAmE//ɔːɡˈmentɪd//
 
-ing form augmenting
BrE BrE//ɔːɡˈmentɪŋ//
 
; NAmE NAmE//ɔːɡˈmentɪŋ//
 
 
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augment something (formal) to increase the amount, value, size, etc. of something He wrote magazine articles in order to augment his income. The band had been augmented by two extra trombonists. Word Origin late Middle English: from Old French augmenter (verb), augment (noun), or late Latin augmentare, from Latin augere ‘to increase’.
See the Oxford Advanced American Dictionary entry: augment