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Definition of: magnesium
(mag·nē′zē·əm, -zhē-, -shē-) noun
A light, malleable, ductile, silver–white, metallic element (symbol Mg), used to produce a brilliant light by its combustion, and also as an alloy metal. It occurs abundantly in combination, as in magnesite and dolomite. See ELEMENT. [<NL, magnesia]
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