Meaning of fluosilicic acid

flu'o•si•lic'ic ac'id

Pronunciation: (fl'ō-si-lis'ik, fl"-), [key]
— Chem. Chem.
  1. an unstable acid, HSiF, known only in its colorless, poisonous, fuming aqueous solution or in the form of its salts: used chiefly as a wood preservative, a disinfectant, and as a hardening agent in the manufacture of ceramic ware, cement, and concrete.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.