/ Dictionary / Index H hypostasize: Meaning and Definition of Find definitions for: hy•pos•ta•size Pronunciation: (hī-pos'tu-sīz", hi-), [key] — -sized, -siz•ing. to assume the reality of (an idea, proposition, etc.); hypostatize. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hypostasis hypostatic Related Content Daily Word Quiz: blithesome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language