Langimage
English

diadromous

|di-a-dro-mous|

C2

🇺🇸

/ˌdaɪəˈdroʊməs/

🇬🇧

/ˌdaɪəˈdrəʊməs/

migrating between fresh and salt water

Etymology
Etymology Information

'diadromous' originates from Greek, specifically the word 'diadromos', where 'dia-' meant 'through' and 'dromos' meant 'running'.

Historical Evolution

'diadromous' was formed in New Latin/modern scientific usage from Greek 'diadromos' and entered English in zoological and ecological contexts in the 19th and 20th centuries.

Meaning Changes

Initially in Greek it meant 'running through' (literally), but over time it became specialized in biological usage to mean 'migrating between fresh and salt water.'

Meanings by Part of Speech

Adjective 1

describing fish or other aquatic organisms that migrate between fresh and salt water (e.g., between rivers and the sea).

Salmon are diadromous fish that migrate from the ocean into rivers to spawn.

Synonyms

Antonyms

Last updated: 2025/09/23 19:18