mg

英 美
  • abbr.元素镁(=magnesium)abbr.毫克(=milligram)
Noun:
  1. one thousandth (1/1,000) gram

  2. 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)