What does corundum mean?
A mineral, a crystalline form of aluminium oxide (Al2O3), occurring naturally as a mineral, especially in igneous and metamorphic rocks. It is also used as an abrasive and in the manufacture of abrasives, refractories, and electrical insulators.
Example
"The geologist studied the corundum deposits in the mine."
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.