Learn how to say Byzantinism correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word Byzantine:
1relating to Byzantium, the Byzantine Empire, or the Eastern Orthodox Church.
of an ornate artistic and architectural style which developed in the Byzantine Empire and spread to Italy, Russia, and elsewhere. The art is typified by religious wall paintings and icons and the architecture by many-domed churches.
2 (also byzantine) (of a system or situation) excessively complicated, and typically involving a great deal of administrative detail:
Byzantine insurance regulations
characterized by deviousness or underhand procedure:
he has the most Byzantine mind in politics
a citizen of Byzantium or the Byzantine Empire.
Pronunciation: /bɪˈzantɪnɪz(ə)m, bʌɪ-/
late 16th century: from Latin Byzantinus, from Byzantium