Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun inorganic chemistry Alternative spelling of
SiO₂ ,silicon dioxide
Etymologies
Sorry, no etymologies found.
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Examples
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When silicone tissue is metabolized, the carbon and hydrogen go to CO2 and H2O, which are breathed out, while the silicone goes into SiO2, which is deposited as more teeth and armor.
Uller Uprising Piper, H. Beam 1952
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They purify silicon dioxide (SiO2, which is basically what you find in regular glass) from quartz sand, add water or ethanol molecules, and then through an unknown process are able to spray this on surfaces and get a very thin film of glass (100 nanometers, or 15-30 molecules) to stick.
TreeHugger 2010
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They purify silicon dioxide (SiO2, which is basically what you find in regular glass) from quartz sand, add water or ethanol molecules, and then through an unknown process are able to spray this on surfaces and get a very thin film of glass (100 nanometers, or 15-30 molecules) to stick.
TreeHugger 2010
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So there's this new stuff called SiO2 Ultra-Thin Layering, which is a much smarter-sounding way of saying "
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However, the health hazard is only from the free crystalline silica (SiO2).
Volcanic Ash -- Effects on Health and Mitigation Strategies 2009
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National Center for Disease Control (CDC) have shown a consistent, but low concentration of free crystalline silica (SiO2).
Volcanic Ash -- Effects on Health and Mitigation Strategies 2009
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Volcanic ash may contain varying proportions of free crystalline silica (silicon dioxide, SiO2) in the form of quartz, cristobalite, or tridymite minerals.
Volcanic Ash -- Effects on Health and Mitigation Strategies 2009
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Volcanic ash may contain varying proportions of free crystalline silica (silicon dioxide, SiO2) in the form of quartz, cristobalite, or tridymite minerals.
Volcanic Ash -- Effects on Health and Mitigation Strategies 2009
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As a mineral name, quartz refers to a specific chemical compound (silicon dioxide, or silica, SiO2), having a specific crystalline form (hexagonal).
Quartz 2008
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Sand, whether it is found on beaches or in rivers and streams, is mostly quartz (silicon dioxide, SiO2) grains.
Sand and gravel 2008
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