Real Dictionary

carbon in American English
a nonmetallic chemical element found in many inorganic compounds and all organic compounds: diamond and graphite are pure carbon; carbon is the basic element in coal, coke, charcoal, soot, etc.: symbol, C; at. no., 6: a radioactive isotope (carbon-14) is
of, like, or treated with carbon
noun: a widely distributed element that forms organic compounds in combination with hydrogen, oxygen, etc., and that occurs in a pure state as diamond and graphite, and in an impure state as charcoal; at. wt.: 12.011; at. no.: 6; sp. gr.: (of diamond) 3.51 at 2

carbon in British English
carbon
noun: a nonmetallic element existing in the three crystalline forms: graphite, diamond, and buckminsterfullerene: occurring in carbon dioxide, coal, oil, and all organic compounds. The isotope carbon-12 has been adopted as the standard for atomic weight; carbon
noun: carbohydrate