In fact, the word "refactoring" feels a bit strange, because I was doing it for so long before there was a word for it. It's one of those terms (DSL, agile, etc) invented by mainstream programmers as they gradually reinvented Lisp hacking.
"Refactoring" is a particularly strange word. It's as if people were talking about "exhaling" as a distinct and even controversial practice. How can anyone breathe without exhaling? Yet articles and books would be written about it: "Should Breathers Exhale?" "When Is An Appropriate Time To Exhale?" "Exhaling: For And Against". People would ask their managers for approval to exhale and the managers would say no we can't afford it, and eventually they'd either just do it anyway on the sly or else turn blue and keel over.