Definition of anadromous

• a. - Ascending rivers from the sea, at certain seasons, for breeding, as the salmon, shad, etc.
• a. - Tending upwards; -- said of terns in which the lowest secondary segments are on the upper side of the branch of the central stem.
• a. - Ascending rivers from the sea, at certain seasons, for breeding, as the salmon, shad, etc.
• a. - Tending upwards; -- said of terns in which the lowest secondary segments are on the upper side of the branch of the central stem.