Breadcrumb Home > Dictionary > Index C consubstantial: Meaning and Definition of Find definitions for: con•sub•stan•tial Pronunciation: (kon"sub-stan'shul), [key] — adj. of one and the same substance, essence, or nature. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: consubstantial (Thesaurus) construe consubstantiate ✖ Related Content Daily Word Quiz: deracinate Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language