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Dictionary

pin•nule

Pronunciation: (pin'yOOl), [key]
—n.
1. Zool.
a. a part or organ resembling a barb of a feather, a fin, or the like.
b. a finlet.
2. Bot.a secondary pinna, one of the pinnately disposed divisions of a bipinnate leaf.
3. a metal plate with a small hole in it, used as a sight in a quadrant.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

pinnulate

pin oak

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