SIMIAN Meaning of SIMIAN in English adj. & n. --adj. 1. of or concerning the anthropoid apes. 2 like an ape or monkey (a simian walk). --n. an ape or monkey. Etymology: L simia ape, perh. f. L simus f. Gk simos flat-nosed Oxford English vocab. Оксфордский английский словарь. 2012