interposition (n.)youdaoicibaDictYouDict[interposition 词源字典]
late 14c., from Old French interposicion (12c.), from Latin interpositionem (nominative interpositio), noun of action from past participle stem of interponere "to put between, place among; put forward," from inter- (see inter-) + ponere "to put, place" (past participle positus; see position (n.)).[interposition etymology, interposition origin, 英语词源]