UDAE (Οὖδαι, Ptol. 5.9.23), a people of Asiatic Sarmatia on the Caspian sea. They are probably the people mentioned under the name of Udini by Pliny (6.12. s. 15). They appear to have derived their name from the river Udon. [T.H.D]
Dictionary of Greek and Roman Geography, illustrated by numerous engravings on wood. William Smith, LLD. London. Walton and Maberly, Upper Gower Street and Ivy Lane, Paternoster Row; John Murray, Albemarle Street. 1854.