/ Dictionary / Index S silicon tetrafluoride: Meaning and Definition of Find definitions for: sil'icon tetrafluor'ide Pronunciation: [key] — Chem. Chem. a colorless, fuming gas, SiF, used chiefly in the manufacture of fluosilicic acid. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. silicon tetrachloride silicon tetrahydride Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language