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Magnesium   /mægnˈiziəm/   Listen
noun
Magnesium  n.  (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.
Magnesium sulphate. (Chem.) Same as Epsom salts.






Collaborative International Dictionary of English 0.48








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"Magnesium" Quotes from Famous Books



... is not easy to believe that it is a fluid, yet its sharply defined upper surface leads us to suppose that it can not well be a mere mass of vapour. The spectroscope shows us that this chromosphere contains in the state of vapour a number of metallic substances, such as iron and magnesium. To an observer who could behold this envelope of the sun from the distance at which we see the moon, the spectacle would be more magnificent than the imagination, guided by the sight of all the relatively trifling fractures of our ...
— Outlines of the Earth's History - A Popular Study in Physiography • Nathaniel Southgate Shaler

... hydrogen and helium, the lightest Of elements, can be traced; and the hydrogen is in an unfamiliar form, implying terrific temperature. In the next stage we find the lines of oxygen, nitrogen, magnesium, and silicon. Metals such as iron and copper come later, at first in a primitive and unusual form. Lastly we get the compounds of titanium and carbon, and the densely shaded spectra which tell of the thickly gathering vapours. The intense cold of ...
— The Story of Evolution • Joseph McCabe

... Growth, Flowering, and Magnesium Deficiency of Reed and Potomac Filbert Varieties—H. L. Crane ...
— Northern Nut Growers Association Report of the Proceedings at the Forty-Second Annual Meeting • Northern Nut Growers Association

... father ignited the end of a piece of magnesium wire, which burst out into a brilliant white light, showing them the roof and sides of the narrow cave, flashing off the water, and, what was of greater interest still, displaying the heads of a couple of seals raised ...
— Menhardoc • George Manville Fenn

... bags, at about fourteen cents a pound, or in carload lots under the chemical name of acetylsalicylic acid, for eleven cents a pound. And any big chemical corporation will sell you U.S.P. grade Milk of Magnesia at about six dollars a ton. Its chemical name, of course, is magnesium hydroxide, or Mg(OH){2}, and you'd have one thousand quarts in that ton. Buying it beautifully packaged and fully advertised, you'd pay up to a dollar twenty-five a pint in the druggist ...
— Subversive • Dallas McCord Reynolds


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