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Meaning of calcium metasilicate

cal'cium met•a•sil'i•cate

Pronunciation: (met"u-sil'i-kit, -kāt"), [key]
  1. a white powder, CaSiO, insoluble in water, used as an antacid and as a filler for paper.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.