postfix UK /ˈpəʊst.fɪks/US /ˈpoʊst.fɪks/noun 2verb 2forms 3 noun2 •A suffix.Two, or three at the very most, of the prefixes or postfixes are quite sufficient for one day's lesson. — 1843 •In the Czech language, a suffix that is placed after the ending. verb2 •To suffix. •To subject a sample to postfixation formspostfixed · postfixing · postfixes
