Definitions

1. adjective

Of or relating to an organism that migrates between two or more different environments, such as between freshwater and saltwater, during different stages of its life cycle.

“The diadromous fish swam upstream to spawn in the mountains.”

2. adjective

Describing a type of movement or migration, especially in reference to organisms.

“The diadromous behavior of the salmon is a vital part of its life cycle.”