Meaning of dicalcium silicate

di•cal'ci•um sil'icate

Pronunciation: (dī-kal'sē-um), [key]
— Chem. Chem.
  1. 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.