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
Nissan Australia expects the initiative to cut its annual CO2 emissions by around 259 tons and save 128 megawatts of energy each year.
—
Bojan Stojkovski, Interesting Engineering, 29 Dec. 2025
Sending a Christmas tree to the landfill creates almost twice as many pounds of emissions, including methane, as the husk decomposes.
—Sophie Hartley, IndyStar, 26 Dec. 2025
The automaker said in a statement the deal puts an end to its legal issues in the United States over the Dieselgate emissions scandal that was uncovered at Volkswagen in September 2015.
—Chris Ramirez, jsonline.com, 26 Dec. 2025
Mercedes-Benz issued a statement saying the deal announced Monday will resolve all remaining legal proceedings tied to diesel emissions in the United States, but the company still considers the accusations unfounded and denies any liability.
—CBS News, 23 Dec. 2025
See All Example Sentences for emission
Examples are automatically compiled from online sources to
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Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
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Bojan Stojkovski, Interesting Engineering, 29 Dec. 2025
Sending a Christmas tree to the landfill creates almost twice as many pounds of emissions, including methane, as the husk decomposes.
—Sophie Hartley, IndyStar, 26 Dec. 2025
The automaker said in a statement the deal puts an end to its legal issues in the United States over the Dieselgate emissions scandal that was uncovered at Volkswagen in September 2015.
—Chris Ramirez, jsonline.com, 26 Dec. 2025
Mercedes-Benz issued a statement saying the deal announced Monday will resolve all remaining legal proceedings tied to diesel emissions in the United States, but the company still considers the accusations unfounded and denies any liability.
—CBS News, 23 Dec. 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 31 Dec. 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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