retrofitting

Verb

retrofit (third-person singular simple present retrofits, present participle retrofitting, simple past and past participle retrofitted)

1. (transitive) To supply (a device, structure, etc.) with new components or parts that were not previously available or installed; to modernize.
   • Trams dating from 2012 have been retro-fitted with lithium batteries, with the conversions starting in 2018.2020 January 2, Richard Clinnick, “Midlands Metro Welcomes New Catenary-free Trams”, in Rail, Peterborough, Cambridgeshire: Bauer Media, →ISSN, →OCLC, page 16

   Synonyms:

   backfit

2. (transitive) To add or substitute (new components or parts) that were not previously available for or installed in a device, structure, etc.

   Synonyms:

   backfit

3. (transitive) Synonym of backport (“to retroactively supply a fix or feature to a previous version of a software product at the same time or after supplying it to the current version.”).
   • The bug was so bad that we had to retrofit our patch to the last three releases, as well as the newest release.

   Synonyms:

   backport

4. (figuratively, transitive) To give new characteristics or make alterations (to someone or something) to suit them to changed circumstances.
5. (intransitive) To supply a device, structure, etc., with new components or parts that were not previously available or installed.

See all 7 meanings of retrofit