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pinnule

Pronunciation: /ˈpɪnjuːl/
Definition of pinnule

noun

Botany
  • a secondary division of a pinnate leaf, especially of a fern.
  • Zoology a part or organ like a small wing or fin, especially a side branch on the arm of a crinoid.

Origin:

late 16th century (denoting one of the sights of an astrolabe): from Latin pinnula 'small wing', diminutive of pinna

pinnule in other Oxford dictionaries

Definition of pinnule in the US English dictionary

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