cal·​cite | \ ˈkal-ˌsīt How to pronounce calcite (audio) \

Definition of calcite

: a mineral CaCO3 consisting of calcium carbonate crystallized in hexagonal form and including common limestone, chalk, and marble — compare aragonite

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Other Words from calcite

calcitic \ kal-​ˈsi-​tik How to pronounce calcite (audio) \ adjective

Examples of calcite in a Sentence

Recent Examples on the Web Through more traditional lab experiments, the team determined the mineral coating is made of calcite with a high concentration of magnesium. Rachael Lallensack, Smithsonian Magazine, "Ten Scientific Discoveries From 2020 that May Lead to New Inventions," 28 Dec. 2020 Take this example of orange calcite from House of Intuition, an L.A.-based metaphysical shop trading in crystals, incense, tarot cards and other magical items. Jaya Saxena, Vogue, "Crystals Are Nonsense—So Why Do I Love Them?," 4 Dec. 2020 But before this finding, no type of calcite had been found in any adult insect. National Geographic, "Leaf-cutter ants have rocky crystal armor, never before seen in insects," 25 Nov. 2020 Among the discoveries was a 7-millimeter-long artifact made from a mineral called calcite, the team reports today in the Journal of the Royal Society Interface. Colin Barras, Science | AAAS, "Atom smasher unearths surprises hidden with 2000-year-old mummy," 24 Nov. 2020 During monsoons, acidic water drips down through the limestone, forming calcite-crystal stalactites on the ceiling. Purbita Saha, Popular Science, "Look inside the hidden world of Earth’s most beautiful caves," 23 Oct. 2020 Most notably, the makeup of the lens and cone pair is a little unclear, with questions about whether trilobites formed useful lenses using the mineral calcite, as some organisms do today. Scott K. Johnson, Ars Technica, "Fabulous fossil preserves eyes of 429-million-year-old trilobite," 15 Aug. 2020 The likes of calcite, quartz, and florite in myriad colors have become pieces of decor in hotels, cafes, and retail businesses. Fortune, "Why people are turning to crystals and not diamonds," 31 May 2020 Travertine terraces are hot springs that rise up through limestone, dissolve calcium carbonate, and deposit calcite, forming funky-looking landscapes. Skye Sherman, Travel + Leisure, "These Yellowstone National Park Webcams Will Cure Your Cabin Fever," 8 Apr. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'calcite.' 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 calcite

1840, in the meaning defined above

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Time Traveler for calcite

Time Traveler

The first known use of calcite was in 1840

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Statistics for calcite

Last Updated

17 Jan 2021

Cite this Entry

“Calcite.” Dictionary, Merriam-Webster, Accessed 21 Jan. 2021.

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More Definitions for calcite


cal·​cite | \ ˈkal-ˌsīt How to pronounce calcite (audio) \

Medical Definition of calcite

: a mineral CaCO3 consisting of calcium carbonate crystallized in hexagonal form and including common limestone, chalk, and marble

Other Words from calcite

calcitic \ kal-​ˈsit-​ik How to pronounce calcite (audio) \ adjective

More from Merriam-Webster on calcite Encyclopedia article about calcite

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