/ Dictionary / Index S schist: Meaning and Definition of Find definitions for: schist Pronunciation: (shist), [key] — n. any of a class of crystalline metamorphic rocks whose constituent mineral grains have a more or less parallel or foliated arrangement. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: schist (Thesaurus) schismatize schistose Related Content Daily Word Quiz: resilient Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language