1. retrofit - Noun
2. retrofit - Verb
the act of adding a component or accessory to something that did not have it when it was manufactured
a component or accessory added to something after it has been manufactured
substitute new or modernized parts or equipment for older ones
fit in or on an existing structure, such as an older house
provide with parts, devices, or equipment not available or in use at the time of the original manufacture
Source: WordNetRhode Island works hard to reduce air pollution in our communities. We passed laws to prohibit cars and buses from idling their engines and to retrofit school buses with diesel pollution controls. But there is only so much a single state can do, particularly against out-of-state pollution. Sheldon Whitehouse
the court ordered a retrofit on all automobiles Source: Internet
The laboratory retrofitted to meet the safety codes Source: Internet
The mansion was retrofitted with modern plumbing Source: Internet
They car companies retrofitted all the old models with new carburetors Source: Internet
And Gore says proposals to overhaul the energy grid and retrofit existing infrastructure and buildings will create millions of new jobs. Source: Internet