/ Dictionary / Index S stishovite: Meaning and Definition of Find definitions for: stish•ov•ite Pronunciation: (stish'u-vīt"), [key] — n. Mineral. a rare polymorph of quartz, SiO, formed under very high pressure, as by meteorite impact. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. stirrup pump stitch Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language