'Bryozoan' definitions:

Definition of 'bryozoan'

From: WordNet
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 [syn: bryozoan, polyzoan, sea mat, sea moss, moss animal]

Definition of 'Bryozoan'

From: GCIDE
  • Bryozoan \Bry`o*zo"an\, a. (Zool.) Of or pertaining to the Bryozoa. -- n. One of the Bryozoa. [1913 Webster]