bryozoan(n = noun.animal) moss animal, polyzoan, sea mat, sea moss - 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;
bryozoan, n. & adj.
--n. any aquatic invertebrate animal of the phylum Bryozoa, forming colonies attached to rocks, seaweeds, etc. Also called POLYZOAN.
--adj. of or relating to the phylum Bryozoa.