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silica

[ sil-i-kuh ]

noun

  1. the dioxide form of silicon, SiO 2 , occurring especially as quartz sand, flint, and agate: used usually in the form of its prepared white powder chiefly in the manufacture of glass, water glass, ceramics, and abrasives.


silica

/ ˈsɪlɪkə /

noun

  1. the dioxide of silicon, occurring naturally as quartz, cristobalite, and tridymite. It is a refractory insoluble material used in the manufacture of glass, ceramics, and abrasives
  2. short for silica glass
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

silica

/ sĭlĭ-kə /

  1. A chemical compound that is the main constituent of most of the Earth's rocks. Silica occurs naturally in five crystalline forms (quartz, tridymite, cristobalite, coesite, and stishovite), in a cryptocrystalline form (chalcedony), and in an amorphous form (opal). It is also the main chemical compound in sand. Silica is used to make glass, concrete, and other materials. Also called silicon dioxide. Chemical formula: SiO 2 .
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Word History and Origins

Origin of silica1

1795–1805; < New Latin, derivative of Latin silex silex
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Word History and Origins

Origin of silica1

C19: New Latin, from Latin: silex
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Compare Meanings

How does silica compare to similar and commonly confused words? Explore the most common comparisons:

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Example Sentences

They’re also questions that I’ve been more inclined to contemplate after absentmindedly chewing on the package of silica gels that come in a bag of beef jerky than I was while watching “The Monkey.”

From Salon

In Los Angeles County, they have become the face of an alarming outbreak of silicosis, a deadly lung disease caused by inhaling dust loaded with crystalline silica, among young workers who cut countertops.

In the months that followed, first responders and residents were exposed to a hazardous mix of asbestos, silica dust, heavy metals and other dangerous substances.

The ash contains volatile organic compounds that can include benzene, silica, asbestos, lead, hydrogen cyanide and hydrogen fluoride.

The rules are aimed at stemming the rise among workers of silicosis, which results from inhaling tiny particles of crystalline silica that scar the lungs, leaving people struggling to breathe.

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