[is-tahn-bool, -tan-; is-tahn-boo
l, -tan-; Turk. is-tahm-bool] 
| a port in NW Turkey, on both sides of the Bosporus: built by Constantine I on the site of ancient Byzantium; capital of the Eastern Roman Empire and of the Ottoman Empire; capital removed to Ankara 1923. 5,494,900. |
| Is·tan·bul (ĭs'tān-bōōl', -tän-, ĭ-stän'bŏŏl) The largest city of Turkey, in the northwest part of the country on both sides of the Bosporus at its entrance into the Sea of Marmara. Founded c. 660 B.C. as Byzantium, it was renamed Constantinople in A.D. 330 by Constantine the Great, who made it the capital of the Eastern Roman, or Byzantine, Empire. The city was sacked by Crusaders in 1204 and taken by the Turks in 1453. Istanbul was chosen as the official name in 1930. Population: 8,800,000. |
Largest city in Turkey, located in the northwestern part of the country on both sides of the Bosporus.
Note: Formerly called Byzantium, then Constantinople, the city was the capital consecutively of the eastern branch of the Roman Empire, of the Byzantine Empire, and of the Ottoman Empire.
Note: It is the seat of the Eastern Orthodox Church.