(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

Any of a range of alloys of iron and carbon whose properties depend on the proportion of carbon.

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

the photographic process of making a carbon print

(photography) an early photographic print made by soaking a carbon tissue in potassium bichromate

a simple electrical resistor containing carbon granules in a binder

the halogenated hydrocarbon tetraiodomethane

(inorganic chemistry) The ammonium salt of carbonic acid, (NH₄)₂CO₃; a white powder, smelling of ammonia, used in the preparation of smelling salts and baking powder.

(chemistry) A salt, Na₂CO₃ formally derived from sodium hydroxide and carbonic acid; it is a white powder, soluble in water, with domestic, commercial and industrial uses; it occurs naturally as natrite

carbon emissions trading