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

 

retrofit

 verb
verb
BrE BrE//ˈretrəʊfɪt//
 
; NAmE NAmE//ˈretroʊfɪt//
 
Verb Forms present simple I / you / we / they retrofit
BrE BrE//ˈretrəʊfɪt//
 
; NAmE NAmE//ˈretroʊfɪt//
 
he / she / it retrofits
BrE BrE//ˈretrəʊfɪts//
 
; NAmE NAmE//ˈretroʊfɪts//
 
past simple retrofitted
BrE BrE//ˈretrəʊfɪtɪd//
 
; NAmE NAmE//ˈretroʊfɪtɪd//
 
past participle retrofitted
BrE BrE//ˈretrəʊfɪtɪd//
 
; NAmE NAmE//ˈretroʊfɪtɪd//
 
-ing form retrofitting
BrE BrE//ˈretrəʊfɪtɪŋ//
 
; NAmE NAmE//ˈretroʊfɪtɪŋ//
 
 
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retrofit something to put a new piece of equipment into a machine that did not have it when it was built; to provide a machine with a new part, etc. Voice recorders were retrofitted into planes already in service. They retrofitted the plane with improved seating. Word Origin 1950s: blend of retroactive and refit.

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