first council of constantinople

English Thesaurus

1. the second ecumenical council in 381 which added wording about the Holy Spirit to the Nicene Creed (noun.group)

hypernym	:	ecumenical council,
definition	:	(early Christian church) one of seven gatherings of bishops from around the known world under the presidency of the Pope to regulate matters of faith and morals and discipline (noun.group)