silica

noun

sil·​i·​ca ˈsi-li-kə How to pronounce silica (audio)
: the dioxide of silicon SiO2 occurring in crystalline, amorphous, and impure forms (as in quartz, opal, and sand respectively)

Examples of silica 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.
Coal ash is a sooty confetti of toxins: arsenic, mercury, silica, radium. Jared Sullivan, TIME, 30 Oct. 2024 Glass contains silica, as do sand and certain types of clay that would have been present on primordial Earth. Bymitch Leslie, science.org, 30 Oct. 2024 In that direction, the company has entered into an agreement to divest its silica product business for $310 million to QEMETICA. Trefis Team, Forbes, 25 Sep. 2024 The silica was then left free-floating as the X-ray burst hit it. Greg Wehner, Fox News, 24 Sep. 2024 See all Example Sentences for silica 

Word History

Etymology

New Latin, from Latin silic-, silex hard stone, flint

First Known Use

circa 1801, in the meaning defined above

Time Traveler
The first known use of silica was circa 1801

Dictionary Entries Near silica

Cite this Entry

“Silica.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/silica. Accessed 22 Nov. 2024.

Kids Definition

silica

noun
sil·​i·​ca ˈsil-i-kə How to pronounce silica (audio)
: a compound that consists of the dioxide of silicon and occurs in various forms (as in quartz, opal, and sand)

Medical Definition

silica

noun
sil·​i·​ca ˈsil-i-kə How to pronounce silica (audio)
: the dioxide of silicon SiO2 that is used as an ingredient of simethicone and that occurs naturally in crystalline, amorphous, and impure forms (as in quartz, opal, and sand respectively)

called also silicon dioxide

More from Merriam-Webster on silica

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