OLFACTORY Meaning of OLFACTORY in English [ ɒl'fakt(ə)ri ]■ adjective relating to the sense of smell.OriginC17: from L. olfactare (frequentative of olfacere 'to smell') + -ory 2 . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004