carborundumPronunciation: /ˌkɑːbəˈrʌndəm/Definition of carborundum noun [mass noun] trademark a very hard black solid consisting of silicon carbide, used as an abrasive. Origin: late 19th century (originally US, as a trademark): blend of carbon and corundumcarborundum in other Oxford dictionaries Definition of carborundum in the US English dictionary
