/ Dictionary / Index C calcium propionate: Meaning and Definition of Find definitions for: cal'cium pro'pionate Pronunciation: [key] a white, water-soluble powder, CaCHO, used in bakery products to inhibit the growth of fungi. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. calcium phosphate calcium silicate 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