an abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous carbon and graphite and diamond; occurs in all organic comp more..an abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous carbon and graphite and diamond; occurs in all organic compounds(noun.substance)
derivation (.... is derived from coal)
a hot fragment of wood or coal that is left from a fire and is glowing or smoldering(noun.object)