anadromous Meaning, Definition & Usage

  1. adjective migrating from the sea to fresh water to spawn

WordNet

A*nad"ro*mous adjective
Etymology
Gr. running upward; + a running, to run.
Definitions
  1. (Zoöl.) Ascending rivers from the sea, at certain seasons, for breeding, as the salmon, shad, etc.
  2. (Bot.) Tending upwards; -- said of terns in which the lowest secondary segments are on the upper side of the branch of the central stem. D. C. Eaton.

Webster 1913