Chilostoma

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Chilostoma \Chi*los"to*ma\, Chilostomata \Chi*lo*stom"a*ta\, n.
     pl. [NL., fr. Gr. ? + ?, ?, outh.] (Zool.)
     An extensive suborder of marine Bryozoa, mostly with
     calcareous shells. They have a movable lip and a lid to close
     the aperture of the cells. [Also written {Chillostomata}.]
     [1913 Webster]