Definition of Orthodox Church in US English:

Orthodox Church

proper noun

  • A Christian church or federation of churches originating in the Greek-speaking church of the Byzantine Empire, not accepting the authority of the Pope, and using ancient forms of service.

The chief Orthodox Churches (often known collectively as the Eastern Orthodox Church) include the national Churches of Greece, Russia, Bulgaria, Romania, and Serbia. The term is also used by other ancient Churches, mainly of African or Asian origin, e.g. the Coptic, Syrian, and Ethiopian Churches

Pronunciation

Orthodox Church

/ˈɔrθəˌdɑks tʃərtʃ/