• A light silver-white metallic element, 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, inpyrotechny, or in photography where a strong actinic illuminant isrequired. Its compounds occur abundantly, as in dolomite, talc,meerschaum, etc. Symbol Mg. Atomic weight, 24.4. Specific gravity,1.75. Magnesium sulphate. (Chem.) Same as Epsom salts.


    Magnesium meaning & definition 1 of Magnesium.


  • The chemical element of atomic number 12, a silver-white metal of the alkaline earth series. It is used to make strong lightweight alloys, and is also used in flash bulbs and pyrotechnics, as it burns with a brilliant white flame.

    Magnesium meaning & definition 2 of Magnesium.


  • a chemical element that is a silver-white metal. Magnesium burns very brightly and is used in making fireworks .

    Magnesium meaning & definition 3 of Magnesium.

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