English

Definition of Carborundum™ noun from the Oxford Advanced Learner's Dictionary

 

Carborundum™

 noun
noun
BrE BrE//ˌkɑːbəˈrʌndəm//
 
; NAmE NAmE//ˌkɑːrbəˈrʌndəm//
 
[uncountable] (chemistry)
 
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a very hard black solid substance, used as an abrasive Word Origin late 19th cent. (originally US, as a trademark): blend of carbon and corundum
See the Oxford Advanced American Dictionary entry: Carborundum™