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Definition of Magnesium
Mag`ne´si`um | n. | 1. | (Chem.) A light silver-white metallic element of atomic number 12, malleable and ductile, quite permanent in dry air but tarnishing in moist air. It burns, forming (the oxide) magnesia, with the production of a blinding light (the so-called magnesium light) which is used in signaling, in pyrotechny, or in photography where a strong actinic illuminant is required. Its compounds occur abundantly, as in dolomite, talc, meerschaum, etc. Symbol Mg. Atomic weight, 24.305. Specific gravity, 1.75. |
Related Words
atomic number 12, carnallite, dolomite, magnesia, magnesite, magnesium oxide, metal, metallic element, Mg, olivine, periclase, spinel
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