Category:Pinna

Pin"na, n.; pl. Pinnæ, e. Pinnas. Etym: [l., a feather.]

1. (bot.) (a) a leaflet of a pinnate leaf. See illust. of bipinnate leaf, under Bipinnate. (b) one of the primary divisions of a decompound leaf.

2. (zoöl.)

Defn: one of the divisions of a pinnate part or organ.

3. Etym: [l. pinna, akin to gr. (zoöl.)

Defn: 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.

4. (anat.)

Defn: the auricle of the ear. See ear.