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Meaning & History
Derived from Greek ἄχεα ῥέων (áchea rhéōn) meaning "the stream of woe". Also compare Greek αχος (achos) meaning "pain". Some consider the aforementioned meaning to be folk etymology, saying that instead the name might be derived from Greek acherousai meaning "marsh-like water". In Greek mythology, the Acheron was a branch of the underworld river of Styx, which newly dead souls needed to cross in order to get into Hades.