Adiabēna, ae, or Adiabēne, ēs, f., = Ἀδιαβηνή, a region in the northern part of ancient Assyria, now Botan, Plin. 5, 12, 13, § 66; Amm. 23, 6, 20 al.

— Hence, Derivv. Adiabēnus, a, um, adj., pertaining thereto: Monobazus, Tac. A. 15, 14; so ib. 1: regimen, ib. 2.

—Adiabēni, ōrum, m., its inhabitants, Plin. 6, 9, 10, § 28.

— Adiabēnicus, a surname of the emperor Severus, as conqueror of Adiabene, Spart. Sev. 9; Sext. Ruf. 21; Inscr. Orell. 903 sq.