ῥόον Save Could not find ῥόοιο in Logeion dictionaries. ῥόοιο Noun: neuter genitive singular of ῥόον ῥόοιο Noun: masculine genitive singular of ῥόος See ῥόοιο in Morpho LSJ ῥόον, τό, only in pl. ῥόα,= τὰ ἐκ τῆς συκαμίνου μόρα τὰ ἄωρα ξηρανθέντα, Hp. ap. Gal. 19.135: but in sg., ὁ ῥοῦς ὁ ἐκ τῶν συκαμίνων Diocl. Fr. 140, cf. Hp. Mul. 1.31.