Osroene (ŏsrōēˈnē) [key], ancient kingdom of NW Mesopotamia, in present-day SE Turkey and NE Syria. Edessa was its capital. It broke away (2d cent. B.C.) from the Seleucid empire and formed a separate kingdom. It came under Roman rule late in the 2d cent. A.D.
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.