atomic number 6

Noun

1.

atomic number 6 - an abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous carbon and graphite and diamond; occurs in all organic compounds Synonyms: carbon, C

activated carbon, activated charcoal, adamant, black lead, C, carbon, carbon 14, carbon black, char, charcoal, chemical element, coal, crude, crude oil, diamond, element, fossil oil, fullerene, graphite, lampblack, limestone, petroleum, plumbago, radiocarbon, rock oil, smut, soot, wood coal