Added 10 October 2026 arianism noun Categories: Mind & IdeasRare Words noun ! Definition from WordNet 3.1, Princeton University. More about arianism at Wordnik → Where our words come from → Heretical doctrine taught by Arius that asserted the radical primacy of the Father over the Son. Related Words: arianizersemi-arianismnestorianismsemi-ariannicolaismadoptianismcreatianismapollinarismathanasianismorigenismadoptionism Back to today's word