pinnule

2 definitions found

pinnule - Collaborative International Dictionary of English v.0.48 :

  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]

pinnule - WordNet (r) 2.1 (2005) :

  pinnule
      n 1: division of a usually pinnately divided leaf [syn: pinna,
           pinnule]