1. Home
  2. Things
  3. Words
  4. corundum

"corundum"

[kuh -ruhn -duh m]

Definition #1 for "corundum"

very hard mineral used as an abrasive

DoNotMindMePls

Definition #2 for "corundum"

The mineral alumina (Al2O3), as found native in a crystalline state. Transparent varieties are used as gemstones, including sapphire, which is the fine blue variety; the oriental ruby, or red sapphire; the oriental amethyst, or purple sapphire; and adamantine spar, the hair-brown variety. It is the hardest substance found native, next to the diamond.

aseemru




© Anyterm LLC All rights reserved 2019. Terms of Service | Privacy Policy |