/ Dictionary / Index F fluosilicate: Meaning and Definition of Find definitions for: flu•o•sil•i•cate Pronunciation: (fl"u-sil'i-kit, -kāt"), [key] — n. Chem. a salt of fluosilicic acid. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: fluosilicate (Thesaurus) fluorspar fluosilicic acid Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language