[ eɪ , α : , pɒˌstɛrɪ'ɔ:rʌɪ , pɒˌstɪə- ]
■ adjective & adverb
1》 (with reference to reasoning or knowledge) proceeding from observations or experiences to the deduction of probable causes.
2》 as an afterthought or with hindsight.
Origin
C17: L., 'from what comes after'.