DEFEASANCE Meaning of DEFEASANCE in English transcription, транскрипция: [ dɪˈfi:zəns ]n. the act or process of rendering null and void. [ME f. OF defesance f. de(s)faire undo (as DE-, faire make f. L facere)] English main colloquial, spoken dictionary. Английский основной разговорный словарь. 2012