Retrofit
WordNet
noun
(1) 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"
(2) A component or accessory added to something after it has been manufactured
verb
(3) Substitute new or modernized parts or equipment for older ones
"The laboratory retrofitted to meet the safety codes"
(4) Fit in or on an existing structure, such as an older house
"The mansion was retrofitted with modern plumbing"
(5) 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"
WiktionaryText
Verb
- 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
- The bug was so bad that we had to retrofit our patch to the last three releases, as well as the newest release.