. . "cementite"^^ . . . . . . "0"^^ . . "iron carbide"@en-us . . . "cementite"@en-us . . "a chemical compound that is a constituent of steel and cast iron; very hard and brittle"@en-us . . . "113961834"@en-us . "114805145"^^ . "14805145-n"^^ . . . "0"^^ . .