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
With ash emissions and other smaller bursts of gas and magma, Etna began to show signs of an impending eruption, multiple news outlets reported.
—
Janet Loehrke, USA TODAY, 1 Mar. 2025
It was considered the largest investment in climate action in American history, earmarking $369 billion to clean energy and climate projects with the goal of getting the U.S. to net zero emissions by 2030 and boosting American industrial production in the process.
—Simmone Shah, TIME, 27 Feb. 2025
Zoom in: Since the finding was issued in the wake of a 2007 Supreme Court decision, scientific and legal justifications to limit greenhouse gas emissions have only grown stronger, said Michael Greenstone, founding director of the University of Chicago's Institute for Climate and Sustainable Growth.
—Andrew Freedman, Axios, 27 Feb. 2025
In Germany — where registrations plummeted 41% last year and 59% in January — the billionaire emphatically supports a far-right party that denies the harm of carbon dioxide emissions.
—Bloomberg, The Mercury News, 26 Feb. 2025
See All Example Sentences for emission
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Janet Loehrke, USA TODAY, 1 Mar. 2025
It was considered the largest investment in climate action in American history, earmarking $369 billion to clean energy and climate projects with the goal of getting the U.S. to net zero emissions by 2030 and boosting American industrial production in the process.
—Simmone Shah, TIME, 27 Feb. 2025
Zoom in: Since the finding was issued in the wake of a 2007 Supreme Court decision, scientific and legal justifications to limit greenhouse gas emissions have only grown stronger, said Michael Greenstone, founding director of the University of Chicago's Institute for Climate and Sustainable Growth.
—Andrew Freedman, Axios, 27 Feb. 2025
In Germany — where registrations plummeted 41% last year and 59% in January — the billionaire emphatically supports a far-right party that denies the harm of carbon dioxide emissions.
—Bloomberg, The Mercury News, 26 Feb. 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 8 Mar. 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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