- Pinnae
- Pinna Pin"na, n.; pl. {Pinn[ae]}, E. {Pinnas}. [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.
[1913 Webster]
2. (Zo["o]l.) One of the divisions of a pinnate part or organ. [1913 Webster]
3. [L. pinna, akin to Gr. ?.] (Zo["o]l.) 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. [1913 Webster]
4. (Anat.) The auricle of the ear. See {Ear}. [1913 Webster]
The Collaborative International Dictionary of English. 2000.