calcium carbonate

noun

: a compound CaCO3 found in nature as calcite and aragonite and in plant ashes, bones, and shells and used especially in making lime and Portland cement and as a gastric antacid

Examples of calcium carbonate in a Sentence

Recent Examples on the Web
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Magnesium carbonate combined with other ingredients, such as calcium carbonate or aluminum hydroxide, helps neutralize stomach acid. Lindsay Cook, Verywell Health, 28 Apr. 2025 Secondly, the way that minerals (such as calcium carbonate) are deposited onto the mycelium structure usually can't be controlled to have the kind of internal geometry that would make the material strong and durable. New Atlas, 21 Apr. 2025 The bacteria are able to convert urea — which the bacteria produce as waste — and calcium into calcium carbonate crystals. Keith Cooper, Space.com, 6 Apr. 2025 The calcium carbonate deposit rate could partially describe expansion, and the distance between polyps was crucial to simulating cloning. Quanta Magazine, 26 Feb. 2025 See All Example Sentences for calcium carbonate

Word History

First Known Use

1868, in the meaning defined above

Time Traveler
The first known use of calcium carbonate was in 1868

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Cite this Entry

“Calcium carbonate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/calcium%20carbonate. Accessed 9 May. 2025.

Kids Definition

calcium carbonate

noun
: a solid substance found in nature as limestone and marble and in plant ashes, bones, and shells and used especially in making lime and portland cement

Medical Definition

calcium carbonate

noun
: a calcium salt CaCO3 that is found in limestone, chalk, marble, plant ashes, bones, and many shells, that is obtained also as a white precipitate by passing carbon dioxide into a suspension of calcium hydroxide in water, and that is used in dentifrices and in pharmaceuticals as an antacid and to supplement bodily calcium stores

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