Byzantine
adjective
[ bɪˈzantʌɪn ]
• relating to Byzantium (now Istanbul), the Byzantine Empire, or the Eastern Orthodox Church.
• (of a system or situation) excessively complicated, and typically involving a great deal of administrative detail.
• "Byzantine insurance regulations"
Byzantine
noun
• a citizen of Byzantium or the Byzantine Empire.
Origin:
late 16th century: from Latin Byzantinus, from Byzantium.