calcium

Definitions of calcium
1

n a white metallic element that burns with a brilliant light; the fifth most abundant element in the earth's crust; an important component of most plants and animals

Synonyms:
Ca, atomic number 20
Types:
calcium ion, factor IV
ion of calcium; a factor in the clotting of blood
Type of:
metal, metallic element
any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.

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