Englisha posterioriadjectiveMeaningInvolving deduction of theories from facts.(of a constructed language) Developed on a basis of languages which already exist.In a manner that deduces theories from facts.Related wordsempirical(English)a priori(English)post hoc(English)ex post facto(English)postfact(English)aprioristic(English)postinductional(English)expostfacto(English)SourcesDictionaryAPI.dev English dictionary data