POLYZOAN
bryozoan, polyzoan, sea mat, sea moss, moss animal
(noun) sessile aquatic animal forming mossy colonies of small polyps each having a curved or circular ridge bearing tentacles; attach to stones or seaweed and reproduce by budding
Source: WordNet® 3.1
Etymology
Adjective
polyzoan (comparative more polyzoan, superlative most polyzoan)
(zoology, obsolete) bryozoan
Noun
polyzoan (plural polyzoans)
(zoology, obsolete) A bryozoan.
Source: Wiktionary
Pol`y*zo"an, n. (Zoöl.)
(a) Any species of Polyzoa; one of the Polyzoa.
(b) A polyzoön.
Source: Webster’s Unabridged Dictionary 1913 Edition