Orthodox Church

Any of the several Eastern Christian churches that are rooted in the Middle East or Eastern Europe but that do not give allegiance to the Roman Catholic pope. The term Orthodox was adopted by the Eastern Church to signify its adherence to the original apostolic traditions, teachings and style of worship. The Orthodox Eucharistic service is called the Divine Liturgy, and worship is very sensual, involving incense, chants and the veneration of icons. The Roman Catholic and Orthodox churches were united until 1054, when the Great Schism occurred, mainly as a result of disputes over papal authority. The pope in Rome claimed supremacy over the four Eastern patriarchs, while the Eastern patriarchs claimed equality with the pope. Although the split was officially made in 1054, divisions began more than two centuries earlier. Today the spiritual head of Orthodoxy is the ecumenical patriarch of Constantinople, who has no governing authority over the other patriarchs but is called “first among equals.”