(inorganic chemistry) carbonyl sulfide

(chiefly Britain) Alternative spelling of carbon nanofiber

(inorganic chemistry) The gas C₃O₂, having a heterocumulene structure O=C=C=C=O

An instance of carbon emissions trading.

(astronomy) any of a class of red giant stars having a high proportion of carbon because of helium burning

(obsolete, chemistry) carbon disulfide

any process, such as photosynthesis, whereby atmospheric carbon dioxide is converted into organic compounds

a non-graphitic form of carbon used for electrodes and high-temperature crucibles

an early form of carbon microphone

(obsolete, chemistry) carbon disulphide