Meaning of EMISSION in English

EMISSION

/ iˈmɪʃn; NAmE / noun

1.

[ U ] ( formal ) the production or sending out of light, heat, gas, etc. :

the emission of carbon dioxide into the atmosphere

emission controls

2.

[ C ] gas, etc. that is sent out into the air :

The government has pledged to clean up industrial emissions.

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WORD ORIGIN

late Middle English (in the sense emanation ): from Latin emissio(n-) , from emiss- sent out, from the verb emittere , from e- (variant of ex- ) out of + mittere send.

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.