nicaea
- n an ancient city in Bithynia; founded in the 4th century BC and flourished under the Romans; the Nicene Creed was adopted there in 325
 - n the seventh ecumenical council in 787 which refuted iconoclasm and regulated the veneration of holy images
 - n the first ecumenical council in 325 which produced the wording of the Nicene Creed and condemned the heresy of Arianism