/ Dictionary / Index H Homoousian: Meaning and Definition of Find definitions for: Ho•mo•ou•si•an Pronunciation: (hō"mō-'sē-un, -ou'-, hom"ō-), [key] — n. a member of a 4th-century a.d. church party that maintained that the essence or substance of the Father and the Son is the same (opposed to Heteroousian). —adj. of or pertaining to the Homoousians or their doctrine. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. homonymy homophile Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language