What does anadromous mean?
The definition of anadromous
A*nad”ro*mous, a.
Etym: [Gr.

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.