silica

[ sil-i-kuh ]

/ ˈsɪl ɪ kə /

noun

the dioxide form of silicon, SiO2, 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.

Also called silicon dioxide.

Origin of silica

1795–1805; <New Latin, derivative of Latin silexsilex

Words nearby silica

Silenus, silesia, Silesian, silex, silhouette, silica, silica gel, silica glass, silicate, silicates, silicatosis

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for silica

For the large number of abrasives produced from silica, outside of flint pebbles, domestic sources of production are ample.
The Economic Aspect of Geology|C. K. Leith
On evaporating to dryness, and digesting in water, all the silica will remain in an insoluble state.
A Dictionary of Arts, Manufactures and Mines|Andrew Ure
The most important determinations for these are total alkali and silica.
The Handbook of Soap Manufacture|W. H. Simmons
Decomposition ensues, silica being deposited in a gelatinous state, and hydrofluosilicic acid remaining in solution.
Cooley's Cyclopdia of Practical Receipts and Collateral Information in the Arts, Manufactures, Professions, and Trades..., Sixth Edition, Volume I|Arnold Cooley

Siliceous limestones, where their silica is original and of organic origin, have contained skeletons of sponges or radiolaria.
Encyclopaedia Britannica, 11th Edition, Volume 16, Slice 6|Various

British Dictionary definitions for silica

silica

/ (ˈsɪlɪkə) /

noun

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

short for silica glass

Word Origin for silica

C19: New Latin, from Latin: silex

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

Medical definitions for silica

silica

[ sĭl′ĭ-kə ]

n.

A crystalline compound occurring abundantly as quartz, sand, and many other minerals and used to manufacture a variety of materials, especially glass and concrete.

Scientific definitions for silica

silica

[ sĭl′ĭ-kə ]

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: SiO2.

单词	silica
释义	silica [ sil-i-kuh ] / ˈsɪl ɪ kə / noun the dioxide form of silicon, SiO2, 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. Also called silicon dioxide. Origin of silica 1795–1805; <New Latin, derivative of Latin silexsilex Words nearby silica Silenus, silesia, Silesian, silex, silhouette, silica, silica gel, silica glass, silicate, silicates, silicatosis Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for silica For the large number of abrasives produced from silica, outside of flint pebbles, domestic sources of production are ample. The Economic Aspect of Geology\|C. K. Leith On evaporating to dryness, and digesting in water, all the silica will remain in an insoluble state. A Dictionary of Arts, Manufactures and Mines\|Andrew Ure The most important determinations for these are total alkali and silica. The Handbook of Soap Manufacture\|W. H. Simmons Decomposition ensues, silica being deposited in a gelatinous state, and hydrofluosilicic acid remaining in solution. Cooley's Cyclopdia of Practical Receipts and Collateral Information in the Arts, Manufactures, Professions, and Trades..., Sixth Edition, Volume I\|Arnold Cooley Siliceous limestones, where their silica is original and of organic origin, have contained skeletons of sponges or radiolaria. Encyclopaedia Britannica, 11th Edition, Volume 16, Slice 6\|Various British Dictionary definitions for silica silica / (ˈsɪlɪkə) / noun 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 short for silica glass Word Origin for silica C19: New Latin, from Latin: silex 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 Medical definitions for silica silica [ sĭl′ĭ-kə ] n. A crystalline compound occurring abundantly as quartz, sand, and many other minerals and used to manufacture a variety of materials, especially glass and concrete. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for silica silica [ sĭl′ĭ-kə ] 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: SiO2. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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