Arianism
in theology, the doctrines of Arius and his school. Arius was presbyter of the church of Alexandria in the fourth century. He was a unitarian, holding that Christ, the Son, was created by the Father and was subordinate to Him, though possessing a similar nature. The doctrine of Arius was condemned by the church at the Council of Nice, A. D. 325, which decreed that Christ was "of one substance with the Father." The views of Arius were disseminated by fugitive Arians, and became the national religion of the Goths, Vandals, Suevi, and Longobardi, but these churches were gradually received within the Catholic Church, and the Arians as a sect faded away. See Council Of Nice
Volume I · Aiton’s Encyclopedia