Meaning : Provide with parts, devices, or equipment not available or in use at the time of the original manufacture.
Example :
They car companies retrofitted all the old models with new carburetors.
Meaning : Fit in or on an existing structure, such as an older house.
Example :
The mansion was retrofitted with modern plumbing.
Meaning : Substitute new or modernized parts or equipment for older ones.
Example :
The laboratory retrofitted to meet the safety codes.
Meaning : A component or accessory added to something after it has been manufactured.
Meaning : The act of adding a component or accessory to something that did not have it when it was manufactured.
Example :
The court ordered a retrofit on all automobiles.