Pinnule

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [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]

From WordNet (r) 2.0 [wn]:

  pinnule
       n : division of a usually pinnately divided leaf [syn: {pinna}]