I.a region in the northern part of ancient Assyria, now Botan, Plin. 5, 12, 13, § 66; Amm. 23, 6, 20 al.— Hence,
II. Derivv.
A. Ădĭăbēnus , a, um, adj., pertaining thereto: “Monobazus,” Tac. A. 15, 14; so ib. 1: “regimen,” ib. 2. —Ădĭăbēni , ōrum, m., its inhabitants, Plin. 6, 9, 10, § 28.—
B. Ădĭăbēnĭcus , a surname of the emperor Severus, as conqueror of Adiabene, Spart. Sev. 9; Sext. Ruf. 21; Inscr. Orell. 903 sq.