Alphabet
Alumina meaning
[uh-loo-muh-nuh]
Definitions of alumina is:
  • noun alumina
    an oxide of aluminum, Al2O3, present in bauxite and clay and found as different forms of corundum, including emery, sapphires, and rubies
  • noun alumina
    the natural or synthetic oxide of aluminum, Al 2 O 3 , occurring in nature in a pure crystal form as corundum.
  • noun alumina
    A white solid, aluminum oxide, that occurs in bauxite and is found in crystalline form as the main constituent of corundum, sapphire, and other minerals.