[uncountable] (formal) the production or sending out of light, heat, gas, etc. the emission of carbon dioxide into the atmosphere; emission controls.

[uncountable] (formal) the production or sending out of light, heat, gas, etc. the emission of carbon dioxide into the atmosphere.

The action of giving off or sending out (chiefly what is subtle or imponderable, light, heat, gases, odours, sounds, etc.).

Substances given off by the activities of people or by productive processes. Emissions may be solid particles or liquids deposited in rivers or the sea.

​used to describe a vehicle that does not produce gases that cause pollution. Zero-emission cars—including all electric cars—are exempt from car tax.

(biology) ​an occasion when a man ejaculates while he is asleep. Take your English to the next level. The Oxford Learner's Thesaurus explains the difference ...

Definition of emissions trading noun from the Oxford Advanced American Dictionary emissions trading noun = carbon trading

Substances given off by the activities of people or by productive processes. Emissions may be solid particles or liquids deposited in rivers or the sea.

​emit something to send out something such as light, heat, sound, gas, etc. The metal container began to emit a clicking sound. Sulphur gases were emitted ...

There is one meaning in OED's entry for the noun emission theory. See 'Meaning & use' for definition, usage, and quotation evidence. Entry status. OED is ...