/ Dictionary / Index C capsaicin: Meaning and Definition of Find definitions for: cap•sa•i•cin Pronunciation: (kap-sā'u-sin), [key] — n. a colorless, crystalline, bitter compound, CHNO, present in capsicum. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: capsaicin (Thesaurus) caps. cap screw Related Content Daily Word Quiz: labyrinth Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language