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corundum

/kəˈrʌn.dəm/

corundumnoun

corundums

Translations

Corundum is used as an abrasive due to its hardness.

Корунд используется как абразив из-за своей твердости.

Definitions

A very hard mineral composed of aluminum oxide, used as an abrasive and in the manufacture of certain gemstones such as sapphires and rubies.

The jeweler examined the corundum to determine its quality before setting it into the ring.

Synonyms

corundumadjective

/kəˈrʌn.dəm/

Used attributively to describe objects made of or containing corundum.

Definitions

Made of or containing corundum.

The technician replaced the worn stone with a corundum grinding wheel.

Synonyms

very hard