emission
noun
emis·sion
ē-ˈmi-shən 
1
a
: an act or instance of emitting : emanation
b
archaic
: publication
c
: a putting into circulation
2
a
: something sent forth by emitting: such as
(1)
: electromagnetic radiation from an antenna or a celestial body
(2)
usually emissions
: substances discharged into the air (as by a smokestack or an automobile engine)
b
Examples of emission in a Sentence
trying to reduce the emission of greenhouse gases
Recent Examples on the Web
One effective tool is internal carbon pricing—where companies assign a price to emissions to guide investment decisions.
—
Romain Pison, Forbes.com, 18 Apr. 2025
On average, a vegetarian diet leads to 35% lower greenhouse gas emissions than diets that include meat, while a vegan diet leads to 50% less emissions than diets with meat.15
Pescatarian diets can harm the environment due to unsustainable fishing practices like overfishing.
—Isabel Vasquez Rd Ldn, Health, 18 Apr. 2025
Other approaches Still other litigation approaches argue that governments inadequately reviewed the effects of greenhouse gas emissions, or even supported or subsidized those emissions caused by private industry.
—Hannah Wiseman, The Conversation, 18 Apr. 2025
New Yorkers generate about a third of the carbon emissions of the average American, thanks to our dense living patterns, robust public transit, and vertical housing.
—Grace Rauh, New York Daily News, 16 Apr. 2025
See All Example Sentences for emission
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Romain Pison, Forbes.com, 18 Apr. 2025
On average, a vegetarian diet leads to 35% lower greenhouse gas emissions than diets that include meat, while a vegan diet leads to 50% less emissions than diets with meat.15
Pescatarian diets can harm the environment due to unsustainable fishing practices like overfishing.
—Isabel Vasquez Rd Ldn, Health, 18 Apr. 2025
Other approaches Still other litigation approaches argue that governments inadequately reviewed the effects of greenhouse gas emissions, or even supported or subsidized those emissions caused by private industry.
—Hannah Wiseman, The Conversation, 18 Apr. 2025
New Yorkers generate about a third of the carbon emissions of the average American, thanks to our dense living patterns, robust public transit, and vertical housing.
—Grace Rauh, New York Daily News, 16 Apr. 2025
See All Example Sentences for emission
Cite this Entry
“Emission.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/emission. Accessed 22 Apr. 2025.
Copy CitationKids Definition
emission
noun
emis·sion
ē-ˈmish-ən
1
: an act or instance of emitting
2
: something emitted or discharged
Medical Definition
emission
noun
emis·sion
ē-ˈmish-ən
1
: an act or instance of emitting
2
a
: something sent forth by emitting: as
(1)
: electrons discharged from a surface
(2)
: electromagnetic waves radiated by an antenna or a celestial body
(3)
: substances and especially pollutants discharged into the air (as by a smokestack or an automobile gasoline engine)
b
: a discharge of fluid from a living body
especially
: ejaculate see nocturnal emission
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