An Ecumenical Council (also sometimes Oecumenical Council), or general council, is a meeting of the bishops of the Christian Church of the whole world who have come together to discuss matters of Church doctrine and practice.
The word is from the Greek word ΟικουμένηOikouménē, which means "inhabited" and was originally another name for the territory of the Roman Empire since all of the earliest councils were called by Roman Emperors. In later times, it was used in the sense of "worldwide" or "general."
List of ecumenical councils
The first seven Ecumenical Councils
Fourth-century inscription, representing Christ as the Good Shepherd.
Quinisext Council (= Fifth and Sixth) or Council in Trullo, (692); this council is accepted by the Eastern Orthodox Church as a part of the Third Council of Constantinople, but is rejected by Catholics.
7. Second Council of Nicaea, (787); restoration of the veneration of icons and end of the first iconoclasm. It is rejected by many Protestant denominations, who instead prefer the Council of Constantinople of 754, which condemned the veneration of icons.