/ Dictionary / Index S stereoisomerism: Meaning and Definition of Find definitions for: ster•e•o•i•som•er•ism Pronunciation: (ster"ē-ō-ī-som'u-riz"um, stēr"-), [key] — n. Chem. the isomerism ascribed to different relative positions of the atoms or groups of atoms in the molecules of organic compounds. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. stereoisomeric stereology Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language