silicon dioxide

noun

: silica

Examples of silicon dioxide in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The team determined that this high reflectivity is the result of clouds of silicate minerals, including silicon dioxide and magnesium silicate, forming on the planet's dayside and acting like sunscreen. — Robert Lea, Space.com, 30 Oct. 2026 Instead of etching holes directly into the semiconductor, researchers patterned a silicon dioxide layer and then covered it with epitaxial semiconductor. — Rupendra Brahambhatt, Interesting Engineering, 5 Sep. 2026 Unlike rocky planets such as Mars and Earth, angrites do not have a lot of silicon dioxide. — Andrew Paul, Popular Science, 3 June 2026 Again, an ammonium fluoride solution is one of the starting materials; the silicon dioxide simply precipitates out of this solution. — ArsTechnica, 28 May 2026 See All Example Sentences for silicon dioxide

Word History

First Known Use

circa 1909, in the meaning defined above

Time Traveler
The first known use of silicon dioxide was circa 1909

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Cite this Entry

“Silicon dioxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/silicon%20dioxide. Accessed 12 Nov. 2026.

Kids Definition

silicon dioxide

noun
: silica

Medical Definition

silicon dioxide

noun
: silica
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