Con ‧ stan ‧ tine the Great /ˌkɒnstəntaɪn ðə ˈɡreɪt $ ˌkɑːn-/ BrE AmE ( also Constantine I /-ðə ˈfɜːst $ -ˈfɜːrst/)
(?274–337 AD) the first Christian ruler of the ↑ Roman Empire . In 330 AD he made ↑ Byzantium the capital city of the empire instead of Rome and changed the name of the new capital to Constantinople. ⇨ ↑ Byzantine