/ Dictionary / Index E enantiomer: Meaning and Definition of Find definitions for: en•an•ti•o•mer Pronunciation: (i-nan'tē-u-mur), [key] — n. Chem. either of a pair of optical isomers that are mirror images of each other. Cf. diastereoisomer. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: enantiomer (Thesaurus) enantio- enantiomorph 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