calcium
Calcium (noun) means a soft, silvery-white chemical element (symbol Ca) essential for healthy bones and teeth. Example: “Milk and cheese are good sources of calcium.”
How to use calcium
Learner’s notesIn plain EnglishA mineral element that the body needs for strong bones and teeth, found in dairy, leafy greens, and other foods.
Word forms
- Plural
- calciums
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Milk and cheese are good sources of _____.
Etymology
Coined in 1808 by the chemist Humphry Davy from Latin calx, "lime," since the element occurs naturally in limestone.
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