Carborundum
Pronunciation : Car`bo*run"dum
Part of Speech : [Carbon
Definition : Defn: A beautiful crystalline compound, SiC, consisting of carbon and silicon in combination; carbon silicide. It is made by heating carbon and sand together in an electric furnace. The commercial article is dark-colored and iridescent. It is harder than emery, and is used as an abrasive.
+ corundum.]
Source : Webster's Unabridged Dictionary, 1913