/ Dictionary / Index C calcium silicate: Meaning and Definition of Find definitions for: cal'cium sil'icate Pronunciation: [key] any of the silicates of calcium: calcium metasilicate, dicalcium silicate, and tricalcium silicate. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. calcium propionate calcium sulfide Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language