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
The researchers calculated that cement made from silicate rocks could require less than 60 percent of the energy needed to process limestone while cutting associated carbon dioxide emissions by more than 80 percent.
—
Neetika Walter, Interesting Engineering, 14 May 2026
The system enables closed-loop recycling, which extends material life cycles and reduces cotton emissions and pollution.
—Jennifer Bringle, Footwear News, 14 May 2026
In an interview about his 2022 book, How to Avoid a Climate Disaster, Bill Gates said that curtailing consumption to eliminate carbon emissions is of limited value.
—John Reid, The Atlantic, 14 May 2026
Car companies had expected much stricter American emissions rules, leading them to invest billions of dollars to move towards an all-electric vehicle lineup sometime in the next decade.
—Chris Isidore, CNN Money, 14 May 2026
See All Example Sentences for emission
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Neetika Walter, Interesting Engineering, 14 May 2026
The system enables closed-loop recycling, which extends material life cycles and reduces cotton emissions and pollution.
—Jennifer Bringle, Footwear News, 14 May 2026
In an interview about his 2022 book, How to Avoid a Climate Disaster, Bill Gates said that curtailing consumption to eliminate carbon emissions is of limited value.
—John Reid, The Atlantic, 14 May 2026
Car companies had expected much stricter American emissions rules, leading them to invest billions of dollars to move towards an all-electric vehicle lineup sometime in the next decade.
—Chris Isidore, CNN Money, 14 May 2026
See All Example Sentences for emission
Cite this Entry
“Emission.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/emission. Accessed 20 May. 2026.
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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