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a light silver-white ductile bivalent metallic element; in pure form it burns with brilliant white flame; occurs naturally only in combination (as in magnesite and dolomite and carnallite and spinel and olivine)

a light silver-white ductile bivalent metallic element; in pure form it burns with brilliant white flame; occurs naturally only in combination (as in magnesite and dolomite and carnallite and spinel and olivine)

A light, silvery, metallic element. It has the atomic symbol Mg, atomic number 12, and atomic weight 24.31. Its salts are essential in nutrition, being required for the activity of many enzymes, especially those concerned with oxidative phosphorylation. It is a component of both intra- and extracellular fluids and is excreted in the urine and feces. Deficiency causes irritability of the nervous system with tetany, vasodilation, convulsions, tremors, depression, and psychotic behavior. (From Dorland, 27th ed)

A silver-colored metal, forming the base of some valuable salts.

The metalic base of magnesia.

A light, silver white metallic element.

See Magnesia-m. Chloride of, Magnesii chloridum- m. Oxide of, Magnesia usta.

A white metal.

A silvery white metal, which readily oxidizes in moist air, is both malleable and ductile, melts at a red heat, and, on ignition, burns with a brilliant white light, particularly rich in chemical rays. It occurs extensively distributed throughout the mineral kingdom, and is also present in small quantities in animal and vegetable organisms. Atomic weight, 24.41. Symbol, Mg. Sp. gr., 1.75.