Pterobranchia

2 definitions found

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

  Pterobranchia \Pter`o*bran"chi*a\, n. pl. [NL., fr. Gr. ? a wing
     + ? ?.] (Zool.)
     An order of marine Bryozoa, having a bilobed lophophore and
     an axial cord. The genus {Rhabdopleura} is the type. Called
     also {{Podostomata}}. See {Rhabdopleura}.
     [1913 Webster]



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

  Bryozoa \Bry`o*zo"a\, n. pl. [NL., fr. Gr. ? moss + ? animal.]
     (Zool.)
     A class of Molluscoidea, including minute animals which by
     budding form compound colonies; -- called also {Polyzoa}.
     [1913 Webster]
  
     Note: They are often coralike in form and appearance, each
           small cell containing an individual zooid. Other
           species grow in delicate, flexible, branched forms,
           resembling moss, whence the name. Some are found in
           fresh water, but most are marine. The three principal
           divisions are {Ectoprocta}, {Entoprocta}, and
           {Pterobranchia}. See {Cyclostoma}, {Chilostoma}, and
           {Phylactolema}.
           [1913 Webster]