Trademark.
- any of various abrasives or refractories of silicon carbide, fused alumina, and other materials.
noun
- trademark
- any of various abrasive materials, esp one consisting of silicon carbide
- (as modifier)a Carborundum wheel
silicon carbide used as an abrasive, (reg. trademark U.S. June 21, 1892, by Carborundum Co. of Monongahela City, Pa.), from carbon + corundum.