The story
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: A 4th century heretical Arianist sect founded by Aerius of Pontus which, amoungst other heresies, rejected the heirarchical strucuture of the church, and thus are sometimes seen as proto-Protestant. Full definition →
Etymology from Wiktionary, CC BY-SA 4.0.