Definition of "refactor"

(programming) To rewrite existing source code in order to improve its readability, reusability or structure without affecting its meaning or behaviour.  examples

(writing) To rewrite existing text in order to improve its readability, reusability or structure without intentionally affecting its meaning. Similar to, but sometimes involving more extensive restructuring than, copy editing.  examples

(programming) The process by which source code is refactored.  examples