n. [ Cf. F. fluosilicate. ] (Chem.) A double fluoride of silicon and some other (usually basic) element or radical, regarded as a salt of fluosilicic acid; -- called also silicofluoride. [ 1913 Webster ]

n. (Chem.) A salt of hydrofluosilic acid; a silicofluoride. See Silicofluoride. [ 1913 Webster ]