Calcium
Cal´ci`um Pronunciation: kăl´sĭ`ŭm
| n. | 1. | (Chem.) An elementary substance; a metal which combined with oxygen forms lime. It is of a pale yellow color, tenacious, and malleable. It is a member of the alkaline earth group of elements. Atomic weight 40. Symbol Ca.
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| Noun | 1. |  calcium - 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 animalsSynonyms: atomic number 20, Ca |
A mineral that the body needs for strong bones and teeth. Calcium may form stones in the kidney.
atomic number 20, burnt lime, Ca, calcify, calcined lime, calcium ion, calcium oxide, calx, factor IV, fluor, fluorite, fluorspar, fluxing lime, gypsum, lime, limestone, metal, metallic element, quicklime, unslaked lime