The process by which something is retrofitted.

present participle of retrofit

plural of retrofitting

Third-person singular simple present indicative form of retrofit

plural of retrofit

To add or substitute new parts or components to some device, structure etc., that were not previously available; to modernize

Something that has been retrofitted / The act of retrofitting

of, relating to, or being a retrofit

simple past tense and past participle of retrofit

fitted or installed at a later date