/ Dictionary / Index H hypersthene: Meaning and Definition of Find definitions for: hy•per•sthene Pronunciation: (hī'purs-thēn"), [key] — n. Mineral. a dark iron magnesium silicate, an orthorhombic pyroxene containing more than 14 percent ferrous oxide. Cf. bronzite, enstatite. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hyperstatic hypersurface Related Content Daily Word Quiz: morose Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language