catadromous

2 definitions found

catadromous - Collaborative International Dictionary of English v.0.48 :

  Catadromous \Ca*tad"ro*mous\, a. [Gr. kata` down + dro`mos a
     running.]
     1. (Bot.) Having the lowest inferior segment of a pinna
        nearer the rachis than the lowest superior one; -- said of
        a mode of branching in ferns, and opposed to anadromous.
        [1913 Webster]
  
     2. (Zool.) Living in fresh water, and going to the sea to
        spawn; -- opposed to anadromous, and said of the eel.
        [1913 Webster]

catadromous - WordNet (r) 2.1 (2005) :

  catadromous
      adj 1: migrating from fresh water to the sea to spawn [ant:
             anadromous, diadromous]