river, stream, freq. in Hom., always in pl., and mostly with gen. added, ἐπʼ Ὠκεανοῖο ῥοάων Il. 3.5; Μαιάνδρου τε ῥοάς 2.869; ποταμοῖο ῥοῇσι Od. 6.216; ὕδατος καλῇσι ῥ. Il. 16.229, cf. Schwyzer 289.107 (Priene, ii B.C.); Ὠκεανοῦ ῥ. Hes. Th. 841; also Σκαμάνδριοι ῥ. S. Aj. 419 (lyr.); τεναγέων ῥ. Pi. N. 3.25; ἀμπέλου ῥ. the juice of the grape, E. Cyc. 123; μέλιτος Id. Ba. 711; αἵματος Id. Supp. 690: rarely in sg., παρʼ Ἰσμηνοῦ ῥοάν Pi. N. 11.36 codd. (but ῥοᾶν is prob.); ἀμπέλου ῥοή E. Ba. 281: i
flowing of sap, Thphr. CP 1.13.5 (pl.).
flux, as a philosoph. term, Pl. Tht. 152e, v. Cra. 402a; cf. ῥέω I.5. Cf. ῥόος II, ῥοία I.