noun, often attributive
cal·ci·um | \ˈkal-sē-əm \

Definition of calcium 

: a silver-white divalent metallic element of the alkaline-earth group occurring only in combination — see Chemical Elements Table

Examples of calcium in a Sentence

Her doctor said she should eat more foods that are high in calcium, such as milk and cheese.

Recent Examples on the Web

As a last resort, a calcium supplement often sold as a blossom-end rot preventer can be applied. Tom Maccubbin,, "How to treat blossom-end rot," 9 June 2018 Bone health may include taking calcium supplements, or changing medications. Tj Gibson, azcentral, "Outpatient back surgery? It's possible.," 14 Mar. 2018 Calcium High in calcium, açaí berries will help keep your bones, heart, muscles and nerves strong and healthy. Tehrene Firman, Good Housekeeping, "11 Things You Should Know About Açaí Berries, Nature's "Purple Gold"," 23 Nov. 2017 There was also a lot of iron, calcium, zinc, magnesium and sodium—substances consistent with the consumption of red meat or dairy products. The Economist, "A mummy’s final meal adds to an ancient mystery," 12 July 2018 Fresh kombu seaweed — a flavorful, oceanic overlay that imparts umami and important minerals such as iron and calcium to the broth — was foraged that morning from Carmet Beach, also in Bodega. Leilani Marie Labong, San Francisco Chronicle, "Start a tradition with a Bodega beach clambake," 11 May 2018 After the water receded, the remnant exoskeletons turned into land that is packed with calcium. Angela Fritz, Washington Post, "The prehistoric shoreline of the Gulf of Mexico is so fertile you can see it from space," 12 July 2018 So far, Totsch has tried Mojo Hydration's athletic recovery cocktail three times — a mix of vitamin B complex, amino acids, calcium and glutathione, an antioxidant found in plants. Zahria Rogers, The Courier-Journal, "Concierge IV hydration therapy service seeks to rehydrate Louisville," 12 July 2018 Other bowls will be made with the acai berry, said to be high in antioxidants, fiber and calcium. Kenneth R. Gosselin,, "UConn Campus At Hartford's Front Street Gets First Retail Leases," 26 June 2018

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

1808, in the meaning defined above

History and Etymology for calcium

New Latin, from Latin calc-, calx lime

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Statistics for calcium

Last Updated

12 Oct 2018

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Time Traveler for calcium

The first known use of calcium was in 1808

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More Definitions for calcium



English Language Learners Definition of calcium

: a substance that is found in most plants and animals and that is especially important in people for strong healthy bones


cal·ci·um | \ˈkal-sē-əm \

Kids Definition of calcium

: a silvery soft metallic chemical element that is essential for strong healthy bones


noun, often attributive
cal·ci·um | \ˈkal-sē-əm \

Medical Definition of calcium 

: a silver-white bivalent metallic element that is an alkaline earth metal, occurs only in combination, and is an essential constituent of most plants and animals symbol Ca — see Chemical Elements Table

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More from Merriam-Webster on calcium

Spanish Central: Translation of calcium

Nglish: Translation of calcium for Spanish Speakers

Britannica English: Translation of calcium for Arabic Speakers Encyclopedia article about calcium

Comments on calcium

What made you want to look up calcium? Please tell us where you read or heard it (including the quote, if possible).


to reject or criticize sharply

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