0 a compound of silicon and carbon that is used as an abrasive (= a substance for rubbing away surfaces) --
Stealing a carborundum cord from the prison workshop, the prisoners had removed the rivets from the grille and substituted dummy rivets made of soap.
While working on this project, he invented the process of carborundum mezzotint, a printmaking technique.
Carborundum grit is applied in a paste to the surface of an aluminium plate.
The wheel should be coarse and hard, therefore aluminium oxide or carborundum often are employed.
Carborundum prints may be printed as intaglio plates.
As a backup, the units are equipped with a carborundum track brake on each side of the bogies.
Carborundum is a noun and not a gerundive of any verb (although it does look like a gerundive).
Acheson, in 1890, originally attempted to synthesize artificial diamond, but ended up creating blue crystals of silicon carbide, which he called "carborundum".
