presupposition (n.)youdaoicibaDictYouDict[presupposition 词源字典]
1530s, from Middle French présupposition and directly from Medieval Latin praesuppositionem (nominative praesuppositio), noun of action from past participle stem of Latin praesupponere, from prae "before" (see pre-) + suppositio (see suppose).[presupposition etymology, presupposition origin, 英语词源]