Definitions

1. proper noun

the former name of Constantinople, the capital of the Byzantine Empire, from 324 to 330 AD, and again from 1930 to 1930

“The city of Byzantium was an important center of trade and commerce in the ancient world.”

2. noun

the Byzantine Empire, especially in reference to its culture and art

“The architecture of Byzantium had a lasting influence on the development of Eastern Orthodox churches.”

3. historical name

a city in ancient Greece, located on the site of modern Istanbul

“Byzantium was founded in the 7th century BC and was an important city in the ancient Greek world.”