/ Dictionary / Index C chemical: Meaning and Definition of Find definitions for: chem•i•cal Pronunciation: (kem'i-kul), [key] — n. a substance produced by or used in a chemical process. narcotic or mind-altering drugs or substances. —adj. of, used in, produced by, or concerned with chemistry or chemicals: a chemical formula; chemical agents. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: chemical (Thesaurus) chemic chemical bond Related Content Daily Word Quiz: quandary Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language