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1. (n.) silica
the dioxide form of silicon, SiO
Etymology: (1795–1805; < NL, der. of L silex hard stone, flint, boulder)
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| Definition of 'silica' |
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 'silica' |
Webster Dictionary |
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1. (noun) silica
silicon dioxide, SiO/. It constitutes ordinary quartz (also opal and tridymite), and is artifically prepared as a very fine, white, tasteless, inodorous powder
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Definitions of silica 
