calcite

noun

cal·​cite ˈkal-ˌsīt How to pronounce calcite (audio)
: a mineral CaCO3 consisting of calcium carbonate crystallized in hexagonal form and including common limestone, chalk, and marble compare aragonite
calcitic adjective

Examples of calcite 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 interiors feature blue calcite marble in the bathrooms, dark ebony wood and leather accents in the main area, and in-room amenities including Bang & Olufsen speakers and Byredo toiletries. Condé Nast, Condé Nast Traveler, 16 May 2026 The sheer number of microbes breathing in such tight quarters creates concentrated pockets of carbonic acid in and around the marine-snow particles, which dissolve the snow’s calcite. Damien Pine, Scientific American, 15 May 2026 Rock formations with evocative names—boxwork, calcite rafts, dogtooth spar, frostwork—add glorious texture to the underground maze. Robert Annis, Midwest Living, 14 May 2026 Over the following weeks, visible mineral deposits (calcite) began to appear in the crack under the microscope. Srishti Gupta, Interesting Engineering, 31 Mar. 2026 See All Example Sentences for calcite

Word History

First Known Use

1840, in the meaning defined above

Time Traveler
The first known use of calcite was in 1840

Browse Nearby Words

Cite this Entry

“Calcite.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/calcite. Accessed 21 May. 2026.

Kids Definition

calcite

noun
cal·​cite ˈkal-ˌsīt How to pronounce calcite (audio)
: a mineral substance made up of calcium carbonate and found in numerous forms including limestone, chalk, and marble
calcitic adjective

Medical Definition

calcite

noun
cal·​cite ˈkal-ˌsīt How to pronounce calcite (audio)
: a mineral CaCO3 consisting of calcium carbonate crystallized in hexagonal form and including common limestone, chalk, and marble
calcitic adjective

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