: 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
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.
—
Tony Briscoe, Los Angeles Times, 30 Jan. 2025
The lower level is rich in basalt, while the upper level contains a lot of silica.
—Paul Smaglik, Discover Magazine, 3 Jan. 2025
According to a safety sheet from Delta College - University Center, AJAX cleaning products contain small amounts of crystalline silica, a naturally occurring impurity in calcium carbonate.
—Yaakov Katz, Newsweek, 8 Feb. 2025
Banana Bananas contain silica, which helps make hair softer and shinier.
—Bestreviews, The Mercury News, 31 Jan. 2025
See All Example Sentences for silica
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Tony Briscoe, Los Angeles Times, 30 Jan. 2025
The lower level is rich in basalt, while the upper level contains a lot of silica.
—Paul Smaglik, Discover Magazine, 3 Jan. 2025
According to a safety sheet from Delta College - University Center, AJAX cleaning products contain small amounts of crystalline silica, a naturally occurring impurity in calcium carbonate.
—Yaakov Katz, Newsweek, 8 Feb. 2025
Banana Bananas contain silica, which helps make hair softer and shinier.
—Bestreviews, The Mercury News, 31 Jan. 2025
See All Example Sentences for silica
Cite this Entry
“Silica.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/silica. Accessed 12 Mar. 2025.
Copy CitationKids Definition
silica
noun
sil·i·ca
ˈsil-i-kə 
: a compound that consists of the dioxide of silicon and occurs in various forms (as in quartz, opal, and sand)
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