Istanbul

geographical name
Is·​tan·​bul | \ ˌi-stən-ˈbül How to pronounce Istanbul (audio) , -ˌstan-, -ˌstän-, -ˈbu̇l, ˈi-stən-ˌbül, -ˌbu̇l, or with m for n\
variants: or formerly Constantinople \ ˌkän-​ˌstan-​tə-​ˈnō-​pəl How to pronounce Constantinople (audio) \ or ancient Byzantium \ bə-​ˈzan-​tē-​əm How to pronounce Byzantium (audio) , -​ˈzan-​sh(ē-​)əm \

Definition of Istanbul

city in northwestern Turkey partly in Europe and partly in Asia on the Bosporus and the Sea of Marmara; capital of Turkey before its independence in 1923 and earlier capital of the Ottoman Empire population 12,500,000

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