Byzantine

nouns

a native or inhabitant of Byzantium or of the Byzantine Empire
is a member of
a continuation of the Roman Empire in the Middle East after its division in 395
is a member of
an ancient city on the Bosporus founded by the Greeks; site of modern Istanbul; in 330 Constantine I rebuilt the city and called it Constantinople and made it his capital
is a type of (narrower)
a native or inhabitant of Asia

adjectives

of or relating to the Eastern Orthodox Church or the rites performed in it
"Byzantine monks"; "Byzantine rites"
of or relating to or characteristic of the Byzantine Empire or the ancient city of Byzantium
pertains to
highly complex or intricate and occasionally devious
"the Byzantine tax structure"; "Byzantine methods for holding on to his chairmanship"; "convoluted legal language"; "convoluted reasoning"; "the plot was too involved"; "a knotty problem"; "got his way by labyrinthine maneuvering"; "Oh, what a tangled web we weave"- Sir Walter Scott; "tortuous legal procedures"; "tortuous negotiations lasting for months"