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)  
<noun.substance>
<noun.substance>
| Mg |   | 
| atomic number 12 |   | 
| magnesium |   | 
semantic pointers
hypernym
substance holonym
