The Collaborative International Dictionary
Fluosilicic
Fluosilicic \Flu`o*si*lic"ic\, a. [Fluo- + silicic: cf. F. fluosilicique.] (Chem.) Composed of, or derived from, silicon and fluorine.
Fluosilicic acid, a double fluoride of hydrogen and silicon, H2F6Si, obtained in solution in water as a sour fuming liquid, and regarded as the type of the fluosilicates; -- called also silicofluoric acid, and hydrofluosilicic acid.
Wiktionary
fluosilicic
a. (context chemistry English) Composed of, or derived from, silicon and fluorine.