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emission

emission

198 4.6
A substance like gas or smoke that is released into the air
  • noun
  • /ɪˈmɪʃən/
translation icon : emisión
  • Do you know, like, what the emissions from this car actually do to the environment?
  • carbon emissions
  • greenhouse gas emissions
  • gas emissions

I mean, there's a huge amount of carbon emissions from military operations.

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Examples

  • The first of those things, and perhaps most importantly, is about reducing the emissions from food production.

  • The major air pollution sources were automobile exhaust emissions and domestic heating.

    Academic text (2008)
  • Part of the reason was that car emissions went down.

  • And this is the amount of carbon emission per unit GDP.

  • All right, this is business as usual emissions in the United States.

  • In addition, there will be increased road congestion, vehicle emissions, and significant water use.

    Academic text (2008)
  • We actually can significantly reduce our overall emissions by eating less meat or eating no meat whatsoever.

  • As part of a strategy to reduce carbon emissions, management practices that favor carbon storage may be emphasized.

    Academic text (2011)
  • During the 1970s and 1980s, environmental regulations substantially reduced emissions from industry and stationary sources.

    Academic text (2008)
  • Every country has promised to reduce emissions to the level that they signed up for.

Synonyms

discharge
vsemission
27 4.4

Liquid or other matter that comes out of something, often as waste

means a released substance without implying waste or process result
emanation
vsemission
5 8.3

Something that comes out from a place, like gas, light or a smell

refers specifically to a physical substance released into the environment
emittance
vsemission
  • Specialized
1 8.2

A number that shows how well a surface gives off heat as radiation

describes the released substance itself rather than the act or its measure
fumes
vsemission
4.1

Harmful gases that smell bad and come from engines or machines

is any released substance, not only harmful engine vapors

Antonyms

absorption
  • Specialized
21 4.6

A material takes in energy or a substance from another material

Compounds

greenhouse emission
  • Specialized
3 3.8

A gas like carbon dioxide or methane that traps heat in the air and warms the planet

1 8.7

A natural release of semen during sleep, often during a dream

field emission
  • Specialized
1 7.8

Electrons leave a material's surface when a strong electric field pulls them into empty space

radio emission
  • Specialized
1 5.2

A wave like radio signals that an object sends out

1 6.0

A medical scan that shows how body parts use energy, often the brain

emission spectrum
  • Specialized
6.7

A set of bright lines or bands of light given off by something hot like a gas

8.6

A microscope that uses electrons to show a material's surface in very small detail

infrared emission
  • Specialized
5.7

Invisible light that warm things give off

7.4

When a material absorbs very strong light, it releases electrons

A machine that makes detailed pictures showing where the body uses energy

secondary emission
  • Specialized
8.9

Electrons that a surface sends out when hit by fast electrons or charged particles

thermal emission
  • Specialized
6.8

The release of electrons from a material because it is very hot

thermionic emission
  • Specialized
9.1

Electrons escape from a hot metal surface

How Much

cloud
102 1.0
to plume
1 6.3
emission
198 4.6
trace
492 3.3

Surface Forms

emission singular
emissions plural

Morphology

emission = emit (transparent) = emit + sion

The noun is formed from 'emit' and is used metonymically to refer to the substance released; the link to the verb is clear.

Etymology

Emission comes from Latin parts e- 'out' and mittere 'to send', and it shares the root with emit 'to send out'. So an emission can mean the thing sent out, such as a gas, heat, or radiation released into the air.