The goddess of the dawn, Ēōs, has a fixed epithet ēri-géneia, meaning ‘early-generated’ or ‘early-generating’, as at O.02.001. This epithet, which is exclusively hers, has a prefix that derives from the old locative adverb êri ‘early’, and Homeric diction actually preserves êri in collocation with ēṓs ‘dawn’ here at O.19.320. This form ēri-géneia is comparable to the name of the earth-encircling river Ēri-danós, as described in Apollonius of Rhodes Argonautica 4.596. The first part of this name Ēri-danós likewise has the prefix êri; the second part –danos seems to mean ‘dew’ or ‘fluid’, and a likely cognate is Indic dā́nu- ‘fluid, dew’. See also Part 4 of the comment on O.15.250–251.