Definitions

from The Century Dictionary.

  • 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.

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

  • adjective Shaped like a fin or feather.

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

  • adjective Shaped like a fin or feather.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

Latin pinna feather, fin + -form.

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Examples

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