magnesium
mag-ne-si-um · noun
Definitions
noun
- 1.
A chemical element (symbol Mg, atomic number 12), a silvery-white alkaline earth metal that burns with a bright white flame.
- 2.
An essential mineral nutrient required for many biological processes.
Related words
Etymology
Named after Magnesia, a district in Thessaly, Greece, where the mineral magnesia alba was found.