Carborundum Hear it!

Carborundum definition

☆ Car·bo·run·dum (kär′bə run′dəm)

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

Etymology: carb(on) + (c)orundum

noun

such a substance

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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