The modern Turkish name İstanbul (pronounced [isˈtanbuɫ]) (Ottoman Turkish: استانبول) is attested (in a range of variants) since the 10th century, at first in Armenian and Arabic (without the initial İ-) and then in Ottoman sources. It probably comes from the Greek phrase "στὴν Πόλι" [stimˈboli], meaning "in the city", reinterpreted as a single word; a similar case is Stimboli, Crete. It is thus based on the common Greek usage of referring to Constantinople simply as The City.

This is what I came looking for.

Sometimes I wonder if the government should buy unskipable YouTube ads and just run these so future generations can experience it.