adjective
- (of fish) migrating from salt water to spawn in fresh water, as salmon of the genera Salmo and Oncorhynchus (distinguished from catadromous).
adjective
- (of fishes such as the salmon) migrating up rivers from the sea in order to breedCompare catadromous
of fish, “ascending a river to spawn” (as salmon do), 1753, from Latinized form of Greek anadromos “running upward,” from ana “up, back” (see ana-) + dramein “to run” (see dromedary).
- Relating to fish, such as salmon or shad, that migrate up rivers from the sea to breed in fresh water.