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Definition of corundum noun from the Oxford Advanced Learner's Dictionary

corundum

noun
 
/kəˈrʌndəm/
 
/kəˈrʌndəm/
[uncountable]
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  1. an extremely hard form of alumina found in rubies and sapphires. Corundum is used as an abrasive.
    Word Originearly 18th cent.: from Tamil kuruntam and Telugu kuruvindam.
See corundum in the Oxford Advanced American Dictionary
Check pronunciation: corundum

Nearby words

trait
noun
 
 
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