noun
calcium
KAL-see-uhm
noun
1
A soft, silvery-white chemical element (symbol Ca) essential for healthy bones and teeth.
"Milk and cheese are good sources of calcium."
"Calcium deficiency can weaken the bones over time."
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.
Common pairings
calcium deficiency
calcium supplement
rich in calcium
Word Forms
calciums plural
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Etymology
Coined in 1808 by the chemist Humphry Davy from Latin calx, "lime," since the element occurs naturally in limestone.