(adjective)
of, relating to, or characteristic of the ancient city of Byzantium;
e.g. The painting depicts a dark Byzantine alley in the old city.
(adjective)
of, relating to, or having the characteristics of a style of architecture developed in the Byzantine Empire especially in the fifth and sixth centuries featuring the dome carried on pendentives over a square and incrustation with marble veneering and with colored mosaics on grounds of gold;
e.g. The Byzantine structure of the church was considered a lure for tourists.