pinnule

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noun pin·nule \ˈpin-(ˌ)yül\

Definition of pinnule

  1. 1 :  any of the secondary branches of a plumose organ especially of a crinoid

  2. 2 :  one of the ultimate divisions of a twice pinnate leaf

Origin and Etymology of pinnule

New Latin pinnula, from Latin, diminutive of pinna


First Known Use: 1748


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