An instance of carbon emissions trading.

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

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

(chemistry) an allotropic form of carbon consisting of a low-density, three-dimensional web of graphene plates, distorted by the inclusion of some seven-membered rings

an early form of carbon microphone

(organic chemistry) The halogenated hydrocarbon tetrachloromethane; a toxic, non-inflammable liquid, used as a solvent, in dry cleaning and in fire extinguishers.

a simple electrical resistor containing carbon granules in a binder

the halogenated hydrocarbon tetraiodomethane

(biology) Describing any form of life based on the organic biopolymers present in all forms of life on Earth.

(inorganic chemistry) A binary compound of carbon and sulfur, CS₂, a colourless liquid with a not-unpleasant smell; used as a specialist solvent, and in the manufacture of organosulfur compounds.