\A*nad"ro*mous\, a. [Gr. ? running upward; ? + ? a
running, ? to run.]
1. (Zo["o]l.) 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.