ALL meanings of alumina
a·lu·mi·na
A a - noun alumina an oxide of aluminum, Al2O3, present in bauxite and clay and found as different forms of corundum, including emery, sapphires, and rubies 3
- noun alumina the natural or synthetic oxide of aluminum, Al 2 O 3 , occurring in nature in a pure crystal form as corundum. 1
- noun alumina chemical: oxide 1
- 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. 1
- noun alumina Aluminum oxide used especially in mining, material sciences and ceramics. 0