Definition: The name given to the religion of the body of modern churches, including among others the Greek and Russian Orthodox, that is derived from the church of the Byzantine Empire, adheres to the Byzantine rite, and acknowledges the honorary primacy of the patriarch of Constantinople. (from American Heritage Dictionary of the English Language, 4th ed)
specify geog if pertinent
Other names Orthodoxy, Syrian; Orthodoxy, Serbian; Orthodoxy, Russian; Orthodoxy, Greek; Orthodoxy, Eastern; Orthodoxy, Armenian; Ethics, Eastern Orthodox; Syrian Orthodoxy; Serbian Orthodoxy; Eastern Orthodox Ethics; Armenian Orthodoxy; Russian Orthodoxy; Greek Orthodoxy