| Definition of 'silicon dioxide' |
Princeton's WordNet |
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1. (noun) silica, silicon oxide, silicon dioxide
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
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| Definition of 'silicon dioxide' |
U.S. National Library of Medicine |
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1. silicon dioxide
Transparent, tasteless crystals found in nature as agate, amethyst, chalcedony, cristobalite, flint, sand, QUARTZ, and tridymite. The compound is insoluble in water or acids except hydrofluoric acid.
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Definitions of silicon dioxide 
