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Definitions for: Magnesium [n] 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)
Webster (1913) Definition: Mag*ne"si*um, n. [NL. & F. See Magnesia.] (Chem.)
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, 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, 24.4. Specific gravity, 1.75.
Magnesium sulphate. (Chem.) Same as Epsom salts.
Synonyms: atomic number 12, Mg
See Also: carnallite, dolomite, magnesia, magnesite, magnesium oxide, metal, metallic element, olivine, periclase, spinel
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