How to Use calcium carbonate in a Sentence

calcium carbonate

noun
  • Otoliths are formed in a fish’s inner ear with calcium carbonate layers as the fish grows.
    — The Arizona Republic, 19 Feb. 2024
  • Otoliths are made up of calcium carbonate, the same material that makes up egg shells and pearls.
    — Kevin Davenport, idahostatesman, 9 July 2018
  • Workers deal with this by putting calcium carbonate on nests to calm ants before pruning.
    — Lesley Evans Ogden, Smithsonian Magazine, 31 Jan. 2024
  • The light reflecting off the calcium carbonate gives the water a milky blue hue.
    — Soo Kim, MSNBC Newsweek, 25 June 2025
  • The shells are chock full of calcium carbonate, which is often used in resilient flooring.
    — Laura Baisas, Popular Science, 25 July 2024
  • The tests will include a plume of ice crystals, calcium carbonate and forms of sulfur that volcanos tend to erupt.
    — John Fialka, Scientific American, 5 July 2018
  • Bizarre-looking rock towers made of calcium carbonate, like something from a dream.
    — Sammy Roth, Los Angeles Times, 5 June 2025
  • Their bodies are made up of calcium carbonate and chitin, the same material that forms crab shells.
    — Laura Baisas Aug 20, Popular Science, 20 Aug. 2025
  • The tiny sea creatures’ shells are made of calcium carbonate, a dusty white mineral also used as chalk.
    — Theresa MacHemer, Smithsonian Magazine, 10 Feb. 2020
  • The shield is biodegradable and is made of calcium carbonate, the same component that coral skeletons are made of.
    — Sarah Gibbens, National Geographic, 27 Mar. 2018
  • These tiny white chunks of calcium carbonate were embedded in its structure.
    — Georgina Jedikovska, Interesting Engineering, 11 Feb. 2026
  • Aragonite is a form of calcium carbonate, which oceanic creatures like snails use to build their shells.
    — WIRED, 4 Oct. 2022
  • Those polyps build skeletons out of calcium carbonate, not unlike a snail growing a shell, that form the structure of the reef.
    — Benji Jones, Vox, 2 July 2024
  • Corals build reef structures with their calcium carbonate skeletons.
    — Evan Bush, NBC news, 23 Oct. 2025
  • Tall calcium carbonate spires rise from the shores of an ancient, mythical-looking saline lake.
    — Megan Michelson, Outside Online, 10 Oct. 2021
  • Each pool is coated with a buildup of white calcium carbonate, or limestone, and varies in size and temperature.
    — Evie Carrick, Travel + Leisure, 12 Dec. 2023
  • Chalk paint is much thicker and is made from ingredients like calcium carbonate, talc, and pigment.
    — Elizabeth Gulino, House Beautiful, 27 Mar. 2019
  • My goal was to inspect calcium carbonate rocks, found near methane seeps at the base of the canyon walls, in search of methane-eating microbes.
    — Jeffrey Marlow, New Yorker, 5 Apr. 2026
  • The holes were not empty but filled with a fine powder of clean calcium carbonate, the same mineral forming the marble.
    — David Bressan, Forbes, 24 Mar. 2025
  • The inclusion of calcium carbonate in this dog food further enhances its benefits for dogs with dry skin.
    — Amber Smith, Discover Magazine, 11 Aug. 2023
  • But when cracks appear and let in water and oxygen, the spores germinate and grow — and form deposits of calcium carbonate.
    — David Freeman /, NBC News, 24 Jan. 2018
  • Your husband is correct that eggshells are a good source of calcium carbonate, according to at least one random health website.
    — John Hodgman, New York Times, 31 Oct. 2019
  • Coral skeletons are made of calcium carbonate, which dissolves like chalk in a glass of vinegar when exposed to acidic seawater.
    — Andrea Michelson, Smithsonian, 28 Sep. 2019
  • In fact, nacre is roughly 3,000 times tougher than its calcium carbonate building blocks.
    — Caitlin Kennedy, Scientific American, 25 Apr. 2026
  • Egg shells do have plenty of calcium carbonate, an essential mineral for plant's cell structure and soil health.
    — Lauren David, Southern Living, 24 Apr. 2026
  • Water hardness is measured by the milligrams of calcium carbonate per liter of water(mg/L).
    — Mary Marlowe Leverette, Southern Living, 22 Jan. 2025
  • Scientists found that the clam’s shell, made from a type of calcium carbonate called aragonite, is mostly built with plate-like structures.
    — Carlyn Kranking, Smithsonian Magazine, 31 Dec. 2024
  • The researchers want to spray a shield of mist made of calcium carbonate—found in chalk and seashells—into the stratosphere and reflect sunshine back into space.
    — Jennifer Alsever, Fortune, 16 Mar. 2020
  • The stalagmites are created by the slow buildup of calcium carbonate layers as water droplets fall from the cave ceiling.
    — The Salt Lake Tribune, 30 Nov. 2020
  • Water hardness is measured by the milligrams of calcium carbonate per liter of water(mg/L).
    — Mary Marlowe Leverette, Southern Living, 23 June 2026

Some of these examples are programmatically compiled from various online sources to illustrate current usage of the word 'calcium carbonate.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

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