/ Dictionary / Index S silicon carbide: Meaning and Definition of Find definitions for: sil'icon car'bide Pronunciation: [key] — Chem. Chem. a very hard, insoluble, crystalline compound, SiC, used as an abrasive and as an electrical resistor in objects exposed to high temperatures. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. silicon silicon dioxide Related Content Daily Word Quiz: winsome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language