A white or colorless vitreous insoluble solid (SiO2); various forms occur widely in the earth's crust as quartz or cristobalite or tridymite or lechatelierite. Synonyms: silica, silicon oxide.
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"Silicon dioxide" Quotes from Famous Books  ... — U.S. Patent 4,293,314: Gelled Fuel-Air Explosive - October 6, 1981. • Bertram O. Stull |
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