Definition of: Byzantine

(biz′ən·tēn, -tīn, bi·zan′tin) adjective
1. Of or pertaining to Byzantium.
2. Pertaining to a style of architecture developed in the Byzantine Empire during the fourth century, characterized by the round arch springing from four columns or piers, and in which the dome rests on pendentives, with centralized plans, colorful mosaics, and rich decoration. For illustration see under CAPITAL.
—noun A native or inhabitant of Byzantium. Also By·zan·ti·an (bi·zan′·shē·ən, -shən). [<L Byzantinus <Byzantium]
BYZANTINE ARCHITECTURE
Santa Sophia, Constantinople, A.D. 538.