British Dictionary definitions for constantine the great
known as Constantine the Great. Latin name Flavius Valerius Aurelius Constantinus. ?280–337 ad, first Christian Roman emperor (306–337): moved his capital to Byzantium, which he renamed Constantinople (330)
1868–1923, king of Greece (1913–17; 1920–22): deposed (1917), recalled by a plebiscite (1920), but forced to abdicate again (1922) after defeat by the Turks
A Roman emperor of the fourth century. He founded Constantinople as capital of the eastern part of the Roman Empire. Early in his reign, Constantine issued a document allowing Christians (see also Christian) to practice their religion within the empire. Before that, they had frequently been persecuted.