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from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Shaped like a fin or feather.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Shaped like a fin or feather.

from The Century Dictionary and Cyclopedia

  • Like a feather; penniform.
  • Like a fin or flipper: as, the pinniform wing of the penguin.
  • Pinnate in form, in any sense; alate; lobate; auriculate.
  • Resembling a mollusk of the genus Pinna.


Latin pinna feather, fin + -form. (Wiktionary)


Sorry, no example sentences found.


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