/ Dictionary / Index D dicalcium silicate: Meaning and Definition of Find definitions for: di•cal'ci•um sil'icate Pronunciation: (dī-kal'sē-um), [key] — Chem. Chem. a component of cement, 2CaO&multiplydot;SiO, also used to neutralize acid soils. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. dibutyl phthalate dicarboxylic acid Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language