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From Ancient Greek ἀνάδρομος (anádromos), from ἀνά (anáup) + δρόμος (drómosrunning), from Proto-Indo-European *drem- (to run) + -ος (-os); cognate with Sanskrit द्राति (drātito run), द्रम् (drámatito run); Proto-Germanic *tradō (way, track, spoor), from Proto-Indo-European *drā-*der- (to tread, walk, step, run). 


  • (UK) IPA(key)/əˈnad.ɹə.məs/
  • (US) IPA(key)/əˈnæd.ɹə.məs/


anadromous (not comparable)

  1. (of a migratory fish) That lives in the sea and breeds in freshwater.
    Shads and most species of salmon are anadromous.
  2. (botany) Of a fern in which the first veins in a frond segment are produced towards the apex of the frond.

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