Also found in: Dictionary, Thesaurus, Wikipedia.
fluosilicic acid[¦flü·ə·sə′lis·ik ′as·əd]
H2SiF6, a strong inorganic acid. It can exist only in an aqueous solution; in the free state it decomposes into silicon tetrafluoride, SiF4, and hydrogen fluoride, HF. Fluosilicic acid is a powerful disinfectant, but it is primarily used in the preparation of its salts (fluosilicates).