ancient city in NW Mesopotamia, on the site of modern Urfa (Turkey)
See Edessa in American Heritage Dictionary 4
(ĭ-dĕsˈə)
An ancient city of Mesopotamia on the site of present-day Urfa in southeast Turkey. A major Christian center after the third century A.D., it was conquered by the Arabs in 639 and was captured by Crusaders in 1097.