[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. |
| Con·stan·ti·no·ple (kŏn'stān-tə-nō'pəl) See Istanbul. |
A city founded by the Roman emperor Constantine the Great as capital of the eastern part of the Roman Empire. Constantine ruled over both parts of the empire from Constantinople, which was later capital of the Byzantine Empire. Constantinople was conquered by Turkish forces in the fifteenth century.
Note: Today, under the name of Istanbul, Constantinople is the largest city in Turkey.
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.
