Meaning of emission in English

emission

noun

/iˈmɪʃ.ən/ us

/iˈmɪʃ.ən/

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C1 [ U ]

the act of sending out gas, heat, light, etc.:

Bioluminescence is the emission of light from living organisms.

Excess infrared emission was detected around six of these stars.

C1 [ C ]

an amount of gas, heat, light, etc. that is sent out:

He uses a night observation device that picks up heat emissions.

There is a risk of accidents with large emissions of radioisotopes into the biosphere.

[ C usually plural ] environment specialized

an amount of a substance that is produced and sent out into the air that is harmful to the environment, especially carbon dioxide:

Reducing the consumption of energy and increasing its efficient use would help control emissions.

These health risks are caused by vehicle emissions.

The agreement aimed to half the emissions rate in 50 years.

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We can measure the absorption or emission of light at specific wavelengths.
Fluctuations in the intensity of the radio emissions from stars allow researchers to infer the amount of ejected material.
Research is underway to develop ways of measuring the full-body biophoton emissions of human subjects.
He has concerns about the need to curb emissions of smog-forming nitrogen oxides, sulphur dioxide and mercury.
Countries and corporations are making efforts to cut their greenhouse gas emissions.
Vehicles are placed on a treadmill and their emissions are measured when the gas pedal is pushed and the wheels are turning.
State governors are moving toward regional emissions limits.
New, tougher emission standards for cars will be brought in.

SMART Vocabulary: related words and phrases

Emitting and ejecting

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You can also find related words, phrases, and synonyms in the topics:

Physical & chemical processes

Environmental issues

(Definition of emission from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

emission | Business English

emission

noun

ENVIRONMENT

/ɪˈmɪʃən/ us

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[ C, usually plural ]

an amount of something, especially a gas that harms the environment, that is sent out into the air:

emissions of sth The bill is intended to lower emissions of greenhouse gases.

cut/reduce/limit emissions Many countries are reluctant to cut emissions if it means sacrificing economic growth.

emission cuts/reductions/control

California's emissions standards would cut global warming emissions nearly 30% by year 2016.

[ U ]

the act of sending gas, heat, light, etc. out into the air:

Hybrid vehicles reduce the emission of pollutants by about 20%.

(Definition of emission from the Cambridge Business English Dictionary © Cambridge University Press)

Examples of emission

emission

There is an interesting look at emissions trading, which is going to take an increasing role and for which biological sinks may be significant.

From the Cambridge English Corpus

Above it is assumed that quotas are allocated according to emissions.

From the Cambridge English Corpus

The marginal costs of carbon dioxide emissions and the returns to investment in development are readily compared.

From the Cambridge English Corpus

We estimate the marginal cost of reducing carbon emissions beyond the existing baseline.

From the Cambridge English Corpus

We may also say that the adjustment of emissions is effected within almost three periods.

From the Cambridge English Corpus

Option values are attached to the three possibilities: to stop emissions temporarily, to exit entirely and to re-start polluting (for an 'entry fee').

From the Cambridge English Corpus

However, emissions are not necessarily the most relevant measure of (subjective) environmental quality.

From the Cambridge English Corpus

Note that particulate emissions from the chemical plant are significantly higher than emissions from the iron foundry.

From the Cambridge English Corpus

Therefore, in terms of social costs of abatement an emissions tax is as efficient as a standard.

From the Cambridge English Corpus

At this tax rate, there is nearly 96 per cent reduction in emissions on average with a cost increase of less than 50 per cent.

From the Cambridge English Corpus

The firms do make efficient choices under an emissions tax.

From the Cambridge English Corpus

The plants choose low-ash coal to abate particulate emissions.

From the Cambridge English Corpus

The policies that are considered include an emissions standard, an emissions tax, an ash tax, and a coal tax.

From the Cambridge English Corpus

An emissions tax induces efficient allocation of abatement across firms, even when all the firms are different and some firms abate more than the others.

From the Cambridge English Corpus

If we consider first an emissions standard, then the switch to a baghouse depends on plant-specific standards.

From the Cambridge English Corpus

See all examples of emission

These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.

Collocations with emission

emission

These are words often used in combination with emission.

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carbon emission

The policy goal is to reduce the 2010 total carbon emission to 90 per cent that of 2000.

From the Cambridge English Corpus

emission allowance

With a personalised carbon dioxide emission allowance it is apparent that the third world would benefit at the expense of the developed world.

From the

Hansard archive

Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0

emission line

Measurements of the carbon emission line shape are therefore used to extract values for the impurity ion temperature and velocity.

From

Wikipedia

This example is from Wikipedia and may be reused under a CC BY-SA license.

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What is the pronunciation of emission?

Translations of emission

in Chinese (Traditional)

（氣體、熱量、光線等的）排放，散發，射出, 排放物, 散發物…

Meaning of emission in English

emission | Business English

Examples of emission

Collocations with emission

emission

Translations of emission

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