'Pinnule' definitions:
Definition of 'pinnule'
From: WordNet
noun
Division of a usually pinnately divided leaf [syn: pinna, pinnule]
Definition of 'Pinnule'
From: GCIDE
- Pinnule \Pin"nule\, n. [L. pinnula, dim. of pinna feather: cf. F. pinnule.]
- 1. (Bot.) One of the small divisions of a decompound frond or leaf. See Illust. of Bipinnate leaf, under Bipinnate. [1913 Webster]
- 2. (Zool.) Any one of a series of small, slender organs, or parts, when arranged in rows so as to have a plumelike appearance; as, a pinnule of a gorgonia; the pinnules of a crinoid. [1913 Webster]