chrysobull
(gold seal) Imperial document of the Byzantine state which was so named because it bore the gold seal of the emperor.

dome
A characteristic element of Byzantine architecture. The dome is a hemispherical vault on a circular wall (drum) usually pierced by windows. The domed church emerges in the Early Byzantine years and its various types gradually prevail, while they are expanded in the Balkans and in Russia.

gentile
The term was used in the first centuries after Christianity became the official religion of the Roman Empire, to distinguish between Christians and subjects of an ancient Greek religious and cultural background.