01 n. A leaflet of a pinnate leaf. See Illust. of Bipinnate leaf, under Bipinnate.
pl.
Pinnæ, Pinnas ((#))
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2.
One of the divisions of a pinnate part or organ.(Zool.)
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3.
Any species of Pinna, a genus of large bivalve mollusks found in all warm seas. The byssus consists of a large number of long, silky fibers, which have been used in manufacturing woven fabrics, as a curiosity.(Zool.)
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