Definition of "backport"

To retroactively supply (to a previous version of a software product) a fix, or a new feature, at the same time or after supplying it to the current version.  examples

To retroactively supply (a fix or a new feature) to a previous version of a software product at the same time or after supplying it to the current version.  examples

(also video games) To re-release software on its original or a previous platform with new features, after its release on a different platform.  examples

An act of backporting.  examples

A software program that has been backported.  examples