Orthodox Church (def 1).
another name for the Orthodox Church
the Eastern Roman Empire after the fall of the Western Empire in a.d. 476. Capital: Constantinople. noun the continuation of the Roman Empire in the East, esp after the deposition of the last emperor in Rome (476 ad). It was finally extinguished by the fall of Constantinople, its capital, in 1453 See also Eastern Roman […]
Greek rite. the rite of the Greek Orthodox Church and of certain Uniat churches, observed in the Greek language.
caesaropapism, especially before the Great Schism of 1054. Historical Examples Catholic World, Vol. XIII, April to September, 1871 Various
an authority on or student of Byzantine history and culture.