EX OFFICIO Meaning of EX OFFICIO in English [ ˌɛks ə'fɪʃɪəʊ ]■ adverb & adjective by virtue of one's position or status.OriginL., from ex 'out of, from' + officium 'duty'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004