When an acronym expands to include itself — like GNU (GNU... | 펀팩트 위키 | funfact.wiki
When an acronym expands to include itself — like GNU (GNU is Not Unix), PHP (PHP: Hypertext Preprocessor), and YAML (YAML Ain't Markup Language) — it's called a recursive acronym. PHP was originally Personal Home Page Tools before being redefined.
GNU(GNU is Not Unix), PHP(PHP: Hypertext Preprocessor), YAML(YAML Ain't Markup Language)처럼 약자를 풀면 다시 자기 자신이 나오는 것을 '재귀약자'라 한다. PHP는 원래 Personal Home Page Tools의 약자였으나 나중에 재귀약자로 뜻을 바꾸었다.