1. Hyas, antis (acc. Hyān, Ov. F. 5, 179), m., = Ὕας, a son of Atlas, and father or brother of the Hyades, Hyg. Fab. 192; Ov. F. 5, 170. Hence, Sidus Hyantis, the Hyades, id. ib. 5, 734.