bipinnaria
Bi`pin*na"ri*a, n. Etym: [NL., fr. L. bis twice + pinna feather.] (Zoöl.) Defn: The larva of certain starfishes as developed in the free- swimming stage.
Bi`pin*na"ri*a, n. Etym: [NL., fr. L. bis twice + pinna feather.] (Zoöl.) Defn: The larva of certain starfishes as developed in the free- swimming stage.