calcium carbonate
nounDefinition of calcium carbonate
: 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
Corals, like many marine species, protect themselves with skeletons made from calcium carbonate. — Ashley Strickland, CNN, "Scientists studied 2,500 coral reefs to figure out how to save them," 12 Aug. 2019 Using eggshells — which are primarily made of calcium carbonate — to prompt bone growth also provides a sustainable way to reuse them while advancing the technology behind these procedures, according to the researchers. — Maysoon Khan, BostonGlobe.com, "Using eggshells to grow new bone," 24 July 2019 Most calcium carbonate rocks, minerals that precipitate out of flowing water, also contain some uranium. — Kiona N. Smith, Ars Technica, "Humans may have reached Europe by 210,000 years ago," 10 July 2019 The bacteria creates calcium carbonate crystals that bind the sand grains together, resulting in a durable brick that can be used in construction. — Kyle Mizokami, Popular Mechanics, "The U.S. Air Force Plans to 'Grow' Runways with Bacteria," 10 June 2019 Corals, like many marine species, protect themselves with skeletons made from calcium carbonate. — Isabelle Gerretsen, CNN, "Can the world's first land-based coral farm save our reefs?," 13 June 2019 His skeletons are made of the same material as natural coral, calcium carbonate (which only became printable in the last few years). — Lara Sorokanich, Popular Mechanics, "Jacques Cousteau's Grandson Wants to Save the Ocean Floor With Synthetic Coral Reefs," 16 Feb. 2017 Chalk paint is much thicker and is made from ingredients like calcium carbonate, talc, and pigment. — Elizabeth Gulino, House Beautiful, "So What Exactly is Milk Paint?," 27 Mar. 2019 As a type of metamorphic rock that’s generally not foliated (AKA not comprised of layers of stone), quality marble is often made of either calcium carbonate or magnesium carbonate. — Kelly Dawson, House Beautiful, "Everything You Need to Know About Having a Marble Countertop," 5 Feb. 2019These example sentences are selected automatically from various online news sources to reflect current usage of the word 'calcium carbonate.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
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