Arius

[uh-rahy-uh s, air-ee-] /əˈraɪ əs, ˈɛər i-/
noun
1.
died a.d. 336, Christian priest at Alexandria: founder of Arianism.
2.
British Dictionary definitions for Arius

Arius

/ˈɛərɪəs/
noun
1.
?250–336 ad, Greek Christian theologian, originator of the doctrine of Arianism