POLYZOA

(Lat.), n. n. pi. Poal-i2(u8)-zo'as. From iroAvs, many, and (<fov, an animal. The sea-mats or sea mo es; a cla of Molluscoid a including animals forming compound growths or colonies, the mouth of each zooid of which is surrounded by a circle or crescent of tentacles. They have a nervous system, but no heart or an imperfect one. [L; L, 147, 193 (a, 39).] [s. 309]