Cyclostomata \Cy`clo*stom"a*ta\ (s?`kl?-st?m"?-t?), Cyclostoma
\Cy*clos"to*ma\ (s?-kl?s"t?-m?), n. pl. [NL., fr. Gr. ky`klos
circle + sto`ma, -atos mouth.] (Zool.)
A division of Bryozoa, in which the cells have circular
apertures.
[1913 Webster] Cyclostome