1.Definition: an ancient city in Bithynia; founded in the 4th century BC and flourished under the Romans; the Nicene Creed was adopted there in 325

Category: Places

2.Definition: the first ecumenical council in 325 which produced the wording of the Nicene Creed and condemned the heresy of Arianism

Category: General

3.Definition: the seventh ecumenical council in 787 which refuted iconoclasm and regulated the veneration of holy images

Category: General