Definition of pinna Pinna

pin•na

We found 13 definitions of pinna from 6 different sources.

What does pinna mean?

Noun Plural: pinnas
pinna - division of a usually pinnately divided leaf
		pinnule
pinna - the externally visible cartilaginous structure of the external ear
		auricle, ear
		cartilaginous structure body structure given shape by cartilage
		external ear, outer ear the part of the ear visible externally
		ear lobe, earlobe the fleshy pendulous part of the external human ear
		tragus a small cartilaginous flap in front of the external opening of the ear

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pinna (Noun)
The visible part of the ear that resides outside of the head, the auricle.
pinna (Noun)
A leaflet or primary segment of a pinnate compound leaf.
pinna (Noun)
A feather, wing, fin, or other similar appendage.

pinna (n.)
A leaflet of a pinnate leaf. See Illust. of Bipinnate leaf, under Bipinnate.
pinna (n.)
One of the primary divisions of a decompound leaf.
pinna (n.)
One of the divisions of a pinnate part or organ.
pinna (n.)
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.
pinna (n.)
The auricle of the ear. See Ear.

pinna
pin′a, n. a single leaflet of a pinnate leaf: a wing, fin, or the like: the auricle of the ear:—pl. Pinn′æ.—adjs. Pinn′ate, -d, shaped like a feather: furnished with wings or fins.—adv. Pinn′ately.—adjs. Pinnat′ifid, cut as a leaf, half-way down or more, with the divisions narrow or acute; Pinnat′isect (bot.), pinnately divided; Pinn′iform, like a feather or fin: pinnate; Pinn′igrade, moving by fins—also n.; Pinn′iped, Pinnat′iped, fin-footed, as a bird; Pinn′ūlate, -d.—n. Pinn′ūle, one of the branchlets of a pinnate leaf: one of the lateral divisions of the finger-like stalks of an encrinite—also Pinn′ūla.—Pinnate leaf, a compound leaf wherein a single petiole has several leaflets attached to each side of it. [L. pinna, a feather, dim. pinnula.]

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pinna in sign language