Origin and history of Constantinople

masc. proper name, Latin Constantinus, from constans "standing firm, stable, steadfast, faithful," present participle of constare "to stand together," from assimilated form of com "with, together" (see con-) + stare "to stand," from PIE root *sta- "to stand, make or be firm." With the common name-forming suffix -inus (see -ine (1)).

Turkish name of Constantinople; it developed in Turkish 16c. as a corruption of Greek phrase eis tan (ten) polin "in (or to) the city," which is how the local Greek population referred to it. Turkish folk etymology traces the name to Islam bol "plenty of Islam." Greek polis "city" has been adopted into Turkish as a place-name suffix -bolu.

ancient Greek settlement in Thrace on the European side of the Bosphorus, said to be named for its 7c. B.C.E. founder, Byzas of Megara. A place of little consequence until 330 C.E., when Constantine the Great re-founded it and made it his capital (see Constantinople).