silicon dioxide

noun

Definition of silicon dioxide 

: silica

Examples of silicon dioxide in a Sentence

Recent Examples on the Web

The top coat, in contrast, contained the promised silicon dioxide. Lee Hutchinson, Ars Technica, "The Internet-demanded, partially scientific testing of Ultra-Ever Dry (in HD!)," 4 July 2018 These start life as nanoparticles of silicon dioxide. Lee Hutchinson, Ars Technica, "The Internet-demanded, partially scientific testing of Ultra-Ever Dry (in HD!)," 4 July 2018 The mafic or basaltic magma, which is only about 45 to 55 percent silicon dioxide, can be a very hot 1,832 to 2,192 degrees Fahrenheit. New York Times, "How Hot Can Lava Get?," 18 May 2018 One type of magma, called felsic or rhyolitic, is about 65 percent to 75 percent silicon dioxide; its temperature is roughly 1,112 to 1,472 degrees Fahrenheit. New York Times, "How Hot Can Lava Get?," 18 May 2018 An intermediate type of magma, at about 55 to 65 percent silicon dioxide, ranges from 1,472 to 1,832 degrees Fahrenheit. New York Times, "How Hot Can Lava Get?," 18 May 2018 Moganite, a crystal of silicon dioxide similar to quartz, is known to form on Earth in specific circumstances in sedimentary settings from alkaline fluids. Tereza Pultarova, Scientific American, "Mineral Found in Lunar Meteorite Hints at Hidden Moon Water," 3 May 2018 In the case of flat glass, which makes up windows, that mixture may include sand (silicon dioxide), lime, and soda. Doug Main, The Atlantic, "Humankind’s Most Important Material," 7 Apr. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'silicon dioxide.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of silicon dioxide

circa 1909, in the meaning defined above

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The first known use of silicon dioxide was circa 1909

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More Definitions for silicon dioxide

silicon dioxide

noun

Medical Definition of silicon dioxide 

: silica

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