1. (

• retrofit

) a component or accessory added to something after it has been manufactured ;

2. (

• retrofit

) 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" ;

1. (

• retrofit

) 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" ;

2. (

• retrofit

) fit in or on an existing structure, such as an older house; "The mansion was retrofitted with modern plumbing" ;

3. (

• retrofit

) substitute new or modernized parts or equipment for older ones; "The laboratory retrofitted to meet the safety codes" ;