Definition, Meaning & Synonyms

corundum

Noun
/kəˈrʌn.dəm/
Definition
A naturally occurring mineral that is a crystalline form of aluminum oxide.
Examples
  • Corundum is often used as an abrasive material due to its hardness.
  • The famous Hope Diamond has a corundum base that adds to its durability.
  • A variety of corundum, known as sapphire, is prized for its beautiful blue color.
Meaning
Corundum is a hard, crystalline substance that is commonly found in the form of sapphires and rubies.
Synonyms
  • Aluminum oxide
  • Corundum crystal
  • Sapphire (variety)