(physics, astronomy) the nucleosynthesis process, in stars of greater than 8 solar mass that have exhausted their helium supply, in which carbon is converted to neon, sodium, magnesium and other elements

(physics) a radioactive isotopes of carbon, ¹⁴₆C, having six protons and eight neutrons; it is used in radiocarbon dating

(physics) the less common of the two stable isotopes of carbon, ¹³₆C, having six protons and seven neutrons

(chemistry) The lithium salt of carbonic acid, Li₂CO₃, used in the manufacture of glass and ceramics, and medically, in the treatment of bipolar disorder.

(physics) The most abundant of the two stable isotopes of carbon, ¹²₆C, having six protons and six neutrons; it is the standard for atomic weight and is used to define the mole.

(chemistry) A very absorbent form of finely powdered carbon; used in purifying gases, and as an antidote for many poisons.

an arc struck between the tip of a carbon electrode and a piece of metal being welded

(obsolete, inorganic chemistry) carbon dioxide

(inorganic chemistry) Alternative spelling of carbon disulfide

(inorganic chemistry) carbon disulfide