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1. One thousandth (1/1,000) gram
   - milligram

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)
   - magnesium, atomic number 12

Derived forms: mgs

Type of: metal, metallic element, metric weight unit, weight unit

Part of: bitter spar, carnallite, dolomite, grain, magnesia, magnesite, magnesium oxide, metric grain, olivine, periclase, spinel

Encyclopedia: Mg