Noun: atomic number 20
- 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
- calcium, Ca
Type of: metal, metallic element
Part of: burnt lime, calcined lime, calcium oxide, calx, fluor, fluorite, fluorspar, fluxing lime, gypsum, lime, limestone, quicklime, unslaked lime