/ Dictionary / Index C consubstantiation: Meaning and Definition of Find definitions for: con•sub•stan•ti•a•tion Pronunciation: (kon"sub-stan"shē-ā'shun), [key] — n. Theol. the doctrine that the substance of the body and blood of Christ coexist in and with the substance of the bread and wine of the Eucharist. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: consubstantiation (Thesaurus) consubstantiate Consuela Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language