Amphrȳsus or -os, i, m., = Ἀμφρυσός, a small river in the Thessalian province of Phthiotis, near which Apollo fed the flocks of Admetus, Ov. M. 1, 580; 7, 229; Verg. G. 3, 2.

— Derivv. Am-phrȳsius, a, um, adj., belonging to Amphrysus, or, poet. transf., to Apollo: vates, i. e. the Sibyl, Verg. A. 6, 398.

— Am-phrȳsiacus, a, um, adj., the same: gramen, Stat. S. 1, 4, 105.