retrofit

1. To supply (a device, structure, etc.) with new components or parts that were not previously available or installed; to modernize. (transitive)
2. To add or substitute (new components or parts) that were not previously available for or installed in a device, structure, etc. (transitive)
3. 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.”). (transitive) · The bug was so bad that we had to retrofit our patch to the last three releases, as well as the newest release.
4. To give new characteristics or make alterations (to someone or something) to suit them to changed circumstances. (figuratively, transitive)
5. To supply a device, structure, etc., with new components or parts that were not previously available or installed. (intransitive)

He/she/it retrofits · الماضي retrofitted · التصريف الثالث (اسم المفعول) retrofitted · صيغة -ing retrofitting