magnesium 音标拼音: [mægn'iziəm]
n . 镁
镁
magnesium n 1 :
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 ) [
synonym : {
magnesium },
{
Mg }, {
atomic number 12 }]
Magnesium \
Mag *
ne "
si *
um \,
n . [
NL . &
F .
See {
Magnesia }.] (
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 .
[
1913 Webster ]
{
Magnesium sulphate }. (
Chem .)
Same as {
Epsom salts }.
[
1913 Webster ]
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Magnesium - Uses, Side Effects, and More - WebMD Magnesium Supplements: Benefits, Deficiency, Dosage, Effects . . . - WebMD 25 Magnesium-Rich Foods You Should Be Eating Magnesium - Health Professional Fact Sheet - Office of Dietary Supplements What Low Magnesium Levels Mean for Your Body and Health Magnesium: Forms, Benefits, and What the Research Says