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| pin·na [ pínnə ] (plural pin·nae [ pínnee ] or pin·nas) |
noun |
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| Definition: |
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1. zoology feather, wing, or fin: a feather, wing, fin, or other similarly shaped body part or appendage
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2. botany leaflet: any one of the several leaflets that make up a pinnate compound leaf
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3. anatomy
Same as auricle (sense 1)
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| [Late 18th century. < Latin, "feather"] |
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  pin·nal adjective |
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