Meaning of tricalcium silicate

tri•cal'ci•um sil'icate

Pronunciation: (trī-kal'sē-um), [key]
— Chem. Chem.
  1. a component of cement, CaSiO, also used in food to prevent caking.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.