POLYCHAETE Meaning of POLYCHAETE in English [ 'pɒlɪki:t ]■ noun Zoology a marine worm of the order Polychaeta; a bristle worm.Originfrom mod. L. Polychaeta , from Gk polu- 'many' + khaitē 'mane'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004