Fourth Council of Constantinople

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Definition

Proper noun: * The Fourth Council of Constantinople: A historical ecclesiastical council held in 869-870 AD. It is recognized in the Western (Roman Catholic) tradition as the Eighth Ecumenical Council. Its primary action was the condemnation and deposition of Photius, the Patriarch of Constantinople, for assuming the position without approval from Rome, an event that significantly exacerbated tensions leading to the Great Schism between the Eastern Orthodox and Roman Catholic Churches.

Usage Examples
  • Proper noun:
    • Church historians study the Fourth Council of Constantinople to understand the theological and political disputes of the 9th century.
    • The decisions made at the Fourth Council of Constantinople were rejected by the Eastern Church.
    • A key figure condemned by the Fourth Council of Constantinople was Patriarch Photius.
Advanced Usage
  • The council is often referenced in discussions about papal authority and ecclesiastical jurisdiction, as it asserted Rome's power over the See of Constantinople.
  • In historical numbering, it is distinguished from the later council held in 879–880, which is also sometimes called the Fourth Council of Constantinople but is not recognized as ecumenical by the Catholic Church.
Variants and Related Words
  • Photian Council: An informal name sometimes used for the later council of 879-880 that restored Photius.
  • Eighth Ecumenical Council: The designation used within the Roman Catholic tradition for the 869-870 council.
  • Great Schism of 1054: The later, formal split between the churches, for which the Photian schism (involving this council) was a major precursor.
Synonyms
  • (The) Council of 869
  • (The) Eighth Ecumenical Council (in Western tradition)
Related Phrases and Contexts
  • To condemn Photius: The central action of the council.
  • The Photian Schism: The period of conflict surrounding Photius that this council attempted to resolve.
  • East-West Schism: The broader, final split between the churches that this council's events contributed to.
Noun
  1. the council in 869 that condemned Photius who had become the patriarch of Constantinople without approval from the Vatican, thereby precipitating the schism between the eastern and western churches