[annalex]

Byzantium is the empire and Constantinople is its capital city.

“Istanbul” is how the Turks heard the phrase, “eis ten Poli”, “in the city”. It is not even a proper name, just a geographical fiction.

[stormer]

Ah, no. Byzantium is the Latin version of the Greek Byzantion, a city named after King Byzas. Constantine remaned the city Nova Roma, but it was popularly called Constantinople. You are however correct about the etymology of Istanbul.

[muawiyah]

Then the Turk left it with a Greek name ~ how utterly entertaining.

Today "The City" refers only to Manhattan ~