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
Neither was a proposal to eliminate the Environmental Protection Agency's rules for tailpipe emissions standards.
—
Camila Domonoske, NPR, 30 June 2025
With the explosion of AI workloads, energy and carbon emissions are becoming boardroom issues.
—Srikanta Datta, Forbes.com, 30 June 2025
Many Big Tech companies have ambitious climate goals to eliminate their greenhouse gas emissions and hope to meet growing energy demand with clean sources.
—Jeff Young, MSNBC Newsweek, 30 June 2025
The service faces regulatory and safety hurdles but has been lauded for its ability to cut traffic congestion and slash emissions.
—Samantha Subin, CNBC, 30 June 2025
See All Example Sentences for emission
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Camila Domonoske, NPR, 30 June 2025
With the explosion of AI workloads, energy and carbon emissions are becoming boardroom issues.
—Srikanta Datta, Forbes.com, 30 June 2025
Many Big Tech companies have ambitious climate goals to eliminate their greenhouse gas emissions and hope to meet growing energy demand with clean sources.
—Jeff Young, MSNBC Newsweek, 30 June 2025
The service faces regulatory and safety hurdles but has been lauded for its ability to cut traffic congestion and slash emissions.
—Samantha Subin, CNBC, 30 June 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 5 Jul. 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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