ledeburiidi koostises olev, vedelfaasist jahtumisel eutektmuutuse tulemusena tekkinud tsementiit (vt tsementiit, ledeburiit; vrd eutektoidtsementiit), cementite in the ledeburite structure precipitating during cooling from liquid phase as a result of eutectic reaction (see: cementite, ledeburite; compare: eutectoid cementite)
