Heteroousian

[ het-uh-roh-oo-see-uh n, -ou-see-uh n ]
/ ˌhɛt ə roʊˈu si ən, -ˈaʊ si ən /
Ecclesiastical

noun

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

adjective

of or relating to the Heteroousians or their doctrine.

Origin of Heteroousian

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

British Dictionary definitions for heteroousian

Heteroousian
/ (ˌhɛtərəʊˈuːsɪən, -ˈaʊsɪən) /

noun

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

adjective

of or relating to this belief

Word Origin for Heteroousian

C17: from Late Greek heteroousios, from Greek hetero- + ousia nature