pinnule

noun
pin·​nule | \ˈpin-(ˌ)yül \

Definition of pinnule 

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

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

First Known Use of pinnule

1748, in the meaning defined at sense 1

History and Etymology for pinnule

New Latin pinnula, from Latin, diminutive of pinna

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Dictionary Entries near pinnule

pinnotherid

pinnula

pinnulate

pinnule

pinny

pin oak

pin oat

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The first known use of pinnule was in 1748

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Britannica.com: Encyclopedia article about pinnule

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