Carborundum

(kär′bə run′dəm)

☆

very hard abrasives and refractories, esp. silicon carbide, used in grindstones, powders, etc.

Origin: carb(on) + (c)orundum

noun

such a substance

See Carborundum in American Heritage Dictionary 4

A trademark used for an abrasive of silicon carbide crystals.

link/cite print suggestion box

More from YD