Definitions

from The Century Dictionary.

  • noun A generic name given to the bilateral larval form of some echinoderms, as a starfish, under the impression that it was a distinct animal: nearly the same as Brachiolaria. The term is retained to designate such larvæ or stage of development. See also cut under Asteroidea.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Zoöl.) The larva of certain starfishes as developed in the free-swimming stage.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun zoology The larva of certain starfishes as developed in the free-swimming stage.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Latin bis twice + pinna feather.

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