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silica |
2 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Silica \Sil"i*ca\, n. [NL., from L. silex, silics, a flint.] (Chem.) Silicon dioxide, SiO?. It constitutes ordinary quartz (also opal and tridymite), and is artifically prepared as a very fine, white, tasteless, inodorous powder. From WordNet r 1.6 [wn]: silica n : a white or colorless vitreous insoluble solid; various forms occur widely in the earth's crust as quartz or cristobalite or tridymite or lechartelierite [syn: {silicon oxide}, {silicon dioxide}]
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