nicene council

noun

1. either of two church councils that met at Nicaea, the first in a.d. 325 to deal with the Arian heresy, the second in a.d. 787 to consider the question of the veneration of images.

noun

1. the first council of Nicaea, the first general council of the Church, held in 325 ad to settle the Arian controversy
2. the second council of Nicaea, the seventh general council of the Church, held in 787 ad to settle the question of images