Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
diadromous is an adjective meaning "(used of fish) migratory between fresh and salt waters". It carries one recorded sense.
(used of fish) migratory between fresh and salt waters
Definitions, synonyms and semantic relations for diadromous come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. .