/ Dictionary / Index H hyperspace: Meaning and Definition of Find definitions for: hy•per•space Pronunciation: (hī'pur-spās"), [key] — n. Math. a Euclidean space of dimension greater than three. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hypersonic hypersphere Related Content Daily Word Quiz: simian Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language