'Istanbul' definitions:

Definition of 'Istanbul'

(from WordNet)
noun
The largest city and former capital of Turkey; rebuilt on the site of ancient Byzantium by Constantine I in the fourth century; renamed Constantinople by Constantine who made it the capital of the Byzantine Empire; now the seat of the Eastern Orthodox Church [syn: Istanbul, Stambul, Stamboul, Constantinople]

Definition of 'Istanbul'

From: GCIDE
  • Byzantium \Byzantium\ prop. n. An ancient city on the Bosphorus founded by the Greeks. It was later renamed Constaninople in honor of the emperor Constantine, and renamed Istanbul by the Turks, which name it still retains. [WordNet 1.5]

Definition of 'Istanbul'

From: GCIDE
  • Istanbul \Istanbul\ prop. n. A city in European Turkey, built on the site of ancient Byzantium. It is the former capital of the Turkish Empire, known as Constantinople before being captured by the Turks.
  • Syn: Stambul, Stamboul, Constantinople. [WordNet 1.5]