Source : Webster's Revised Unabridged Dictionary (1913)

Bryozoum \Bry`o*zo"um\, n. [NL. See {Bryozoa}.] (Zo["o]l.)
   An individual zooid of a bryozoan coralline, of which there
   may be two or more kinds in a single colony. The zo[oe]cia
   usually have a wreath of tentacles around the mouth, and a
   well developed stomach and intestinal canal; but these parts
   are lacking in the other zooids ({Avicularia}, {O[oe]cia},
   etc.).