RETROFIT
retrofit
(noun) the act of adding a component or accessory to something that did not have it when it was manufactured; “the court ordered a retrofit on all automobiles”
retrofit
(noun) a component or accessory added to something after it has been manufactured
retrofit
(verb) substitute new or modernized parts or equipment for older ones; “The laboratory retrofitted to meet the safety codes”
retrofit
(verb) fit in or on an existing structure, such as an older house; “The mansion was retrofitted with modern plumbing”
retrofit
(verb) provide with parts, devices, or equipment not available or in use at the time of the original manufacture; “They car companies retrofitted all the old models with new carburetors”
Source: WordNet® 3.1
Etymology
Verb
retrofit (third-person singular simple present retrofits, present participle retrofitting, simple past and past participle retrofitted) (transitive or intransitive)
To add or substitute new parts or components to some device, structure etc, that were not previously available; to modernize
To fix an older version (or older versions) as part of the same process of fixing the newest version; to backport
Noun
retrofit (plural retrofits)
Something that has been retrofitted
The act of retrofitting
Adjective
retrofit (not comparable)
of, relating to, or being a retrofit
Source: Wiktionary