retrofitPronunciation: /ˈrɛtrəʊfɪt/Definition of retrofit verb (retrofits, retrofitting, retrofitted) [with object] add (a component or accessory) to something that did not have it when manufactured:motorists who retrofit catalysts to older cars provide (something) with a component or accessory not fitted during manufacture:buses have been retrofitted with easy-access features noun an act of retrofitting a component or accessory: uninsulated and oddly designed dream houses that are badly in need of a retrofit a component or accessory added to something after manufacture: the system is available as a retrofit for all makes of sprayerOrigin: 1950s: blend of retroactive and refitretrofit in other Oxford dictionaries Definition of retrofit in the US English dictionary
