Aluminanoun
Aluminum oxide, especially when used in mining, material sciences or ceramics.
Alundumnoun
alumina, especially a product made from fused alumina
Aluminanoun
One of the earths, consisting of two parts of aluminium and three of oxygen, Al2O3.
Alundumnoun
a substance made of fused alumina
Aluminanoun
any of various forms of aluminum oxide occurring naturally as corundum