corundum

Noun

A very hard mineral that consists of aluminum oxide and is used as an abrasive and in the production of gemstones such as rubies and sapphires.

ریشه

From the Tamil word 'kurundam' meaning 'ruby'.

مثال

• The jeweler examined the corundum under a microscope.
• Corundum is commonly used in industrial applications.
• The corundum deposits in this region are highly valuable.

ترکیب‌های رایج

Corundum powder Corundum crystal Corundum jewelry Corundum mining