RETROFIT Meaning of RETROFIT in English [ 'rɛtrəʊfɪt ]■ verb ( ~s , ~ting , ~ted ) fit with a component or accessory not fitted during manufacture. ■ noun an act of ~ting.Origin1950s: blend of retroactive and refit . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004