Heteroousian

American  

[het-uh-roh-oo-see-uhn, -au-see-uhn] / ˌhɛt ə roʊˈu si ən, -ˈaʊ si ən /

noun

1. a person who believes the Father and the Son to be unlike in substance or essence; an Arian (opposed to Homoousian).

---

adjective

1. of or relating to the Heteroousians or their doctrine.

Heteroousian British  

/ ˌhɛtərəʊˈuːsɪən, -ˈaʊsɪən /

noun

1. a Christian who maintains that God the Father and God the Son are different in substance

---

adjective

1. of or relating to this belief

Etymology

Origin of Heteroousian

1670–80; < Late Greek heterooúsi ( os ) ( Greek hetero- hetero- + ousí ( a ) nature, essence + -os adj. suffix) + -an