Meaning of Heteroousian

Het•er•o•ou•si•an

Pronunciation: (het"u-rō-'sē-un, -ou'sē-un), [key]
— Eccles. Eccles.
—n.
  1. a person who believes the Father and the Son to be unlike in substance or essence; an Arian (opposed to Homoousian).
—adj.
  1. of or pertaining to the Heteroousians or their doctrine.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.