What is Catholic ecumenical councils?, Explain Catholic ecumenical councils
21st Ecumenical Council Opens (1962)
What is ECUMENICAL COUNCIL? What does ECUMENICAL COUNCIL mean? ECUMENICAL COUNCIL meaning
21 Ecumenical Councils
Ecumenical Council Reopens 
An ecumenical council is a conference of ecclesiastical dignitaries and theological experts convened to discuss and settle matters of Church doctrine and practice in which those entitled to vote are convoked from the whole world (oikoumene) and which secures the approbation of the whole Church.