Definition of silicon dioxide Silicon dioxide
We found 3 definitions of silicon dioxide from 3 different sources.
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What does silicon dioxide mean?
WordNet
Noun |
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| 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 | ||
| silica, silicon oxide | ||
| oxide any compound of oxygen with another element or a radical | ||
| quartz a hard glossy mineral consisting of silicon dioxide in crystal form; present in most rocks (especially sandstone and granite); yellow sand is quartz with iron oxide impurities | ||
| cristobalite a white mineral consisting of silica; found in volcanic rocks | ||
| tridymite a mineral form of silica | ||
| lechatelierite, quartz glass, vitreous silica, quartz, crystal colorless glass made of almost pure silica | ||
| chert variety of silica containing microcrystalline quartz | ||
| flint a city in southeast central Michigan near Detroit; automobile manufacturing | ||
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Wiktionary 
Wikipedia 
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Silicon dioxide, also known as silica, is a chemical compound, the oxide of silicon. Its chemical symbol is SiO2. It is known for its hardness since the 16th century. It is an important compound used in most types of glass and other hard substances such as concrete, porcelain and stoneware.
Silicon dioxide exists in nature in a number of forms, including flint, quartz and opal. If the compound is in the form of dust, breathing it will cause silicosis and cancer, as the dust is trapped in the lungs. In other respects, silicon dioxide is harmless.
