CORUNDUM


Meaning of CORUNDUM in English

/ kəˈrʌndəm; NAmE / noun

[ U ] an extremely hard form of alumina found in rubies and sapphires . Corundum is used as an abrasive .

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WORD ORIGIN

early 18th cent.: from Tamil kuruntam and Telugu kuruvindam .

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.