Pol`y·zo'a noun plural [ New Latin , from Greek poly`s many + ... an animal.] (Zoology) Same as Bryozoa . See Illust. under Bryozoa , and Phylactolæmata . Found on http://www.encyclo.co.uk/webster/P/124
Polyzoa is a group of mainly colonial marine and fresh-water animals, and although the individual animals are small the colonies are very large. Found on http://www.probertencyclopaedia.com/browse/BPA.HTM