[mag-nee-zee-uhm, -zhuhm, -shee-uhm]/ mægˈni zi əm, -ʒəm, -ʃi əm /
noun
Chemistry.
a light, ductile, silver-white, metallic element that burns with a dazzling white light, used in lightweight alloys, flares, fireworks, in the manufacture of flashbulbs, optical mirrors, and precision instruments, and as a zinc substitute in batteries. Mg; 24.312; 12; 1.74 at 20°C.