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
Once completed, it is expected to contribute to India's climate goals by providing large-scale public transit capacity with zero direct emissions.
—
Theo Burman, MSNBC Newsweek, 6 June 2025
The active stratovolcano is known for its frequent and persistent eruptions, and volcanic activity in the region can range from explosive eruptions to lava flows and ash emissions, USGS says.
—Nicole Fallert, USA Today, 4 June 2025
Nuclear energy does not produce carbon emissions like fossil fuels, but nuclear had largely gone out of vogue prior to the AI proliferation given its high maintenance costs and concerns about safety.
—Derek Saul, Forbes.com, 3 June 2025
Technological advancements in aviation, defense, and even space exploration will be another catalyst for growth, driven by the increasing emphasis on reducing emissions, improving fuel efficiency, and developing new propulsion technologies.
—Yogi Tharanibalan, Hartford Courant, 3 June 2025
See All Example Sentences for emission
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Theo Burman, MSNBC Newsweek, 6 June 2025
The active stratovolcano is known for its frequent and persistent eruptions, and volcanic activity in the region can range from explosive eruptions to lava flows and ash emissions, USGS says.
—Nicole Fallert, USA Today, 4 June 2025
Nuclear energy does not produce carbon emissions like fossil fuels, but nuclear had largely gone out of vogue prior to the AI proliferation given its high maintenance costs and concerns about safety.
—Derek Saul, Forbes.com, 3 June 2025
Technological advancements in aviation, defense, and even space exploration will be another catalyst for growth, driven by the increasing emphasis on reducing emissions, improving fuel efficiency, and developing new propulsion technologies.
—Yogi Tharanibalan, Hartford Courant, 3 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 10 Jun. 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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