Wiktionary
iron carbide
n. (context metallurgy English) A compound of iron with carbon (Fe3C).
WordNet
iron carbide
n. the iron carbide constituent of steel and cast iron; very hard and brittle [syn: cementite]
Usage examples of "iron carbide".
Microscopically, cast iron is a mat of fibers of iron crystals, iron carbide crystals, and graphite.