Breadcrumb Home > Dictionary Cite Meaning of chiral Find definitions for: chi•ral Pronunciation: (kī'rul), [key] — adj. Chem. (of a molecule) not superimposable on its mirror image. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Chirac Chirchik Related Content Daily Word Quiz: erpsichore Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language