any compound that does not contain carbon

a grey salt of calcium (CaC) used in making acetylene

an abrasive composed of silicon carbide crystals

a chemical compound that is a constituent of steel and cast iron; very hard and brittle

an extremely hard blue-black crystalline compound (SiC) used as an abrasive and a heat refractory material; crystals of silicon carbide can be used as semiconductors

an extremely hard boron–carbon ceramic material used in tank armor, bulletproof vests, engine sabotage powders, as well as numerous industrial applications.