Bipinnaria

1 definition found

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

  Bipinnaria \Bi`pin*na"ri*a\, n. [NL., fr. L. bis twice + pinna
     feather.] (Zool.)
     The larva of certain starfishes as developed in the
     free-swimming stage.
     [1913 Webster] Bipinnate