retrofit Meaning, Definition & Usage

1. noun a component or accessory added to something after it has been manufactured
   
2. 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
3. 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
4. verb fit in or on an existing structure, such as an older house
   
   • The mansion was retrofitted with modern plumbing
5. verb substitute new or modernized parts or equipment for older ones
   
   • The laboratory retrofitted to meet the safety codes

WordNet