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Word of the Day Tuesday, June 9, 2026

calcium

/ˈkælsiəm/ noun · British & US
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What does calcium mean?

noun

A chemical element with the symbol Ca and atomic number 20, the fifth most abundant element in the Earth's crust. It is a silvery-white, soft metal that is highly reactive.

Example

"Calcium is an essential nutrient for the human body, particularly for bone health."

Definition generated by AI and curated by RJS Tech Solutions LLP.

Synonyms for calcium

Rhymes with calcium

Etymologically related