mid-15c., from Late Latin elocutionem (nominative elocutio) "voice production, a speaking out, utterance, manner of expression," in classical Latin especially "rhetorical utterance, oratorical expression," noun of action from past participle stem of eloqui "speak out" (see eloquence). Related: Elocutionary; elocutionist.[elocution etymology, elocution origin, 英语词源]