tungsten carbide

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tung·sten car·bide

one of the hardest known materials, used as an abrasive and in the manufacture of dental cutting instruments.

tungsten carbide

A hard alloy composed of tungsten and carbon. It is used as a metallic alternative to diamond in the manufacture of histological knives and surgical instruments.

tung·sten car·bide

(tŭng'stĕn kahr'bīd)
One of the hardest known materials, used as an abrasive and in manufacture of dental cutting instruments.