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
Vermiculite holds on to important plant nutrients like potassium, calcium, and magnesium, stopping them from being leached out with water.
—
Andy Wilcox, Better Homes & Gardens, 4 June 2025
Like other berries, raspberries—specifically, the red variety—are rich in essential vitamins and minerals, including vitamin C, vitamin K, calcium, magnesium, and potassium, and can play a role in reducing your risk for a range of chronic diseases, including diabetes and Alzheimer’s disease.
—Caroline Tien, SELF, 29 May 2025
Additionally, adding leafy greens like spinach or kale introduces minerals like iron and calcium.
—Matt Rozo, Mercury News, 28 May 2025
Manson warns, however, that excessive amounts of vitamin D can lead to a higher calcium level in blood and urine, and some calcification may occur in the blood vessels and in the soft tissue.
—Tom Gavin, EverydayHealth.com, 27 May 2025
See All Example Sentences for calcium
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.
Andy Wilcox, Better Homes & Gardens, 4 June 2025
Like other berries, raspberries—specifically, the red variety—are rich in essential vitamins and minerals, including vitamin C, vitamin K, calcium, magnesium, and potassium, and can play a role in reducing your risk for a range of chronic diseases, including diabetes and Alzheimer’s disease.
—Caroline Tien, SELF, 29 May 2025
Additionally, adding leafy greens like spinach or kale introduces minerals like iron and calcium.
—Matt Rozo, Mercury News, 28 May 2025
Manson warns, however, that excessive amounts of vitamin D can lead to a higher calcium level in blood and urine, and some calcification may occur in the blood vessels and in the soft tissue.
—Tom Gavin, EverydayHealth.com, 27 May 2025
See All Example Sentences for calcium
Cite this Entry
“Calcium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/calcium. Accessed 10 Jun. 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
Love words? Need even more definitions?
Merriam-Webster unabridged
Share