Word Study
[2x]
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magnesium
CIDE DICTIONARY
magnesium, n. [NL. & F. See Magnesia.].
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. [1913 Webster]
OXFORD DICTIONARY
magnesium, n. Chem. a silvery metallic element occurring naturally in magnesite and dolomite, used for making light alloys and important as an essential element in living organisms.
Idiom
magnesium flare (or light) a blinding white light produced by burning magnesium wire.
Usage
Symb.: Mg.
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