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

 

compact

 verb
verbVerb Forms present simple I / you / we / they compact
BrE BrE//kəmˈpækt//
 
; NAmE NAmE//kəmˈpækt//
 
he / she / it compacts
BrE BrE//kəmˈpækts//
 
; NAmE NAmE//kəmˈpækts//
 
past simple compacted
BrE BrE//kəmˈpæktɪd//
 
; NAmE NAmE//kəmˈpæktɪd//
 
past participle compacted
BrE BrE//kəmˈpæktɪd//
 
; NAmE NAmE//kəmˈpæktɪd//
 
-ing form compacting
BrE BrE//kəmˈpæktɪŋ//
 
; NAmE NAmE//kəmˈpæktɪŋ//
 
 
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BrE BrE//kəmˈpækt//
 
; NAmE NAmE//kəmˈpækt//
 
[usually passive] compact something to press something together firmly a layer of compacted snow
Word Originverb late Middle English: from Latin compact- ‘closely put together, joined’, from the verb compingere, from com- ‘together’ + pangere ‘fasten’.
See the Oxford Advanced American Dictionary entry: compact