Pinna
[pinә]
Definition
(n.) A leaflet of a pinnate leaf. See Illust. of Bipinnate leaf, under Bipinnate.
(n.) One of the primary divisions of a decompound leaf.
(n.) One of the divisions of a pinnate part or organ.
(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.
(n.) The auricle of the ear. See Ear.
Checker: Steve
Definition
n. a single leaflet of a pinnate leaf: a wing fin or the like: the auricle of the ear:—pl. Pinn′?/span>.—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.
Edited by Kathleen