calcium
noun
cal·ci·um
ˈkal-sē-əm 
often attributive
: a metallic chemical element of the alkaline-earth group that occurs naturally only in combination and is essential to cellular functions in all known organisms 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
But pears contain more copper, iron, calcium, magnesium, and zinc than apples do.
—
Cristina Mutchler, Verywell Health, 5 Feb. 2025
As a drink, it’s praised as a rich source of protein and calcium, often touted for its ability to aid digestion and boost joint health, among other benefits.
—Alexis Deboschnek, Bon Appétit, 5 Feb. 2025
Each end of the 2-meter gap had a single trap holding two ions, one strontium and one calcium.
—John Timmer, Ars Technica, 5 Feb. 2025
Dry them thoroughly with a clean microfiber cloth to prevent hard water from drying on them again, leaving behind trace amounts of calcium and magnesium, and starting the cloudy process again.
—Heather Bien, Southern Living, 5 Feb. 2025
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Cristina Mutchler, Verywell Health, 5 Feb. 2025
As a drink, it’s praised as a rich source of protein and calcium, often touted for its ability to aid digestion and boost joint health, among other benefits.
—Alexis Deboschnek, Bon Appétit, 5 Feb. 2025
Each end of the 2-meter gap had a single trap holding two ions, one strontium and one calcium.
—John Timmer, Ars Technica, 5 Feb. 2025
Dry them thoroughly with a clean microfiber cloth to prevent hard water from drying on them again, leaving behind trace amounts of calcium and magnesium, and starting the cloudy process again.
—Heather Bien, Southern Living, 5 Feb. 2025
See all Example Sentences for calcium
Dictionary Entries Near calcium
Cite this Entry
“Calcium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/calcium. Accessed 12 Feb. 2025.
Copy CitationKids Definition
calcium
noun
cal·ci·um
ˈkal-sē-əm
: a silver-white soft metallic element that is found only in combination with other elements (as in limestone) and is one of the necessary elements making up the bodies of most plants and animals see element
Medical Definition
calcium
noun
cal·ci·um
ˈkal-sē-əm
often attributive
: 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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