Orthodox Christianity
The term Orthodox Christianity may refer to:
  • the Eastern Orthodox Church
    Eastern Orthodox Church
    The Orthodox Church, officially called the Orthodox Catholic Church and commonly referred to as the Eastern Orthodox Church, is the second largest Christian denomination in the world, with an estimated 300 million adherents mainly in the countries of Belarus, Bulgaria, Cyprus, Georgia, Greece,...

     and its various geographical subdivisions (such as the Russian
    Russian Orthodox Church
    The Russian Orthodox Church or, alternatively, the Moscow Patriarchate The ROC is often said to be the largest of the Eastern Orthodox churches in the world; including all the autocephalous churches under its umbrella, its adherents number over 150 million worldwide—about half of the 300 million...

    , Greek
    Greek Orthodox Church
    The Greek Orthodox Church is the body of several churches within the larger communion of Eastern Orthodox Christianity sharing a common cultural tradition whose liturgy is also traditionally conducted in Koine Greek, the original language of the New Testament...

    , Cypriot
    Cypriot Orthodox Church
    The Church of Cyprus is an autocephalous Greek church within the communion of Orthodox Christianity. It is one of the oldest Eastern Orthodox autocephalous churches, achieving independence from the Patriarchate of Antioch and All the East in 431...

    , and Serbian
    Serbian Orthodox Church
    The Serbian Orthodox Church is one of the autocephalous Orthodox Christian churches, ranking sixth in order of seniority after Constantinople, Alexandria, Antioch, Jerusalem, and Russia...

     Orthodox Churches)
  • the various Oriental Orthodox churches (such as the Coptic, Ethiopian
    Ethiopian Orthodox Tewahedo Church
    The Ethiopian Orthodox Tewahedo Church is the predominant Oriental Orthodox Christian church in Ethiopia. The Ethiopian Church was administratively part of the Coptic Orthodox Church until 1959, when it was granted its own Patriarch by Coptic Orthodox Pope of Alexandria and Patriarch of All...

    , and Syriac
    Syriac Orthodox Church
    The Syriac Orthodox Church; is an autocephalous Oriental Orthodox church based in the Eastern Mediterranean, with members spread throughout the world. The Syriac Orthodox Church claims to derive its origin from one of the first Christian communities, established in Antioch by the Apostle St....

     Orthodox Churches)
  • Western Rite Orthodoxy
    Western Rite Orthodoxy
    Western Rite Orthodoxy or Western Orthodoxy or Orthodox Western Rite are terms used to describe congregations and groups which are in communion with Eastern Orthodox Churches or Oriental Orthodox Churches using traditional Western liturgies rather than adopting Eastern liturgies such as the Divine...

    , congregations or groups which are allied to Eastern or Oriental Orthodoxy, while using traditional Western liturgies
  • other Christian churches or theologies which consider themselves to be orthodox
    The word orthodox, from Greek orthos + doxa , is generally used to mean the adherence to accepted norms, more specifically to creeds, especially in religion...

    Heresy is a controversial or novel change to a system of beliefs, especially a religion, that conflicts with established dogma. It is distinct from apostasy, which is the formal denunciation of one's religion, principles or cause, and blasphemy, which is irreverence toward religion...

    ), irrespective of whether or not a given church uses the word "orthodox" in its official name; when used in this sense, the word "orthodox" is generally not capitalized
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