emission

noun
emis·​sion | \ ē-ˈmi-shən How to pronounce emission (audio) \

Definition of emission

1a : an act or instance of emitting : emanation
b archaic : publication
c : a putting into circulation
2a : 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 : effluvium

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Other Words from emission

emissive \ ē-​ˈmi-​siv How to pronounce emissive (audio) \ adjective

Examples of emission in a Sentence

trying to reduce the emission of greenhouse gases

Recent Examples on the Web

Unfortunately, including a cost for carbon dioxide emissions has proven politically difficult. Megan Geuss, Ars Technica, "Under current policies, residential batteries increase emissions in most cases," 28 Dec. 2018 For the three years straddling the 2015 Paris conference, carbon-dioxide emissions were more or less flat. Rupert Darwall, WSJ, "Defeat in the Air at the Climate Conference," 18 Dec. 2018 Global carbon dioxide emissions have increased 55 percent in the last 20 years, the calculations show. Seth Borenstein, The Seattle Times, "Climate reality check: Global carbon pollution up in 2018," 5 Dec. 2018 While the Trump administration is rolling back fuel efficiency regulations and limits to carbon dioxide emissions, Lyft, Autodesk, Bloomberg, Uber, WeWork and HP are among the companies pledged to achieving 100 percent renewable energy by 2022. Recode Staff, Recode, "Recode Daily: Where in the world is Alphabet CEO Larry Page?," 14 Sep. 2018 The revocation is contained in a joint proposal with the National Highway Traffic Safety Administration aimed at rolling back a signature Obama-era environmental regulation to slash carbon dioxide emissions. Ryan Beene, Bloomberg.com, "EPA Said to Seek End of California's Authority Over Car Rule," 31 May 2018 Buildings consume 73 percent of the electricity in the U.S., and indirectly create 38 percent of carbon dioxide emissions—more than industry or transportation. National Geographic, "From Historic to Cutting Edge: Revitalizing Iconic Buildings," 25 May 2018 Officials are also warning residents of toxic sulfur dioxide emissions. Jason Daley, Smithsonian, "“Explosive” Eruptions Possible at Hawaii’s Kilauea Volcano," 11 May 2018 That in turn, points Hausker and other energy experts toward the goal of eliminating 80 percent of US carbon dioxide emissions by 2050. Mark Trumbull, The Christian Science Monitor, "Even in Trump era, green energy innovation is sparking, not sputtering," 27 Apr. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'emission.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of emission

1607, in the meaning defined at sense 1a

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Statistics for emission

Last Updated

3 Jun 2019

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Time Traveler for emission

The first known use of emission was in 1607

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More Definitions for emission

emission

noun

English Language Learners Definition of emission

: the act of producing or sending out something (such as energy or gas) from a source
: something sent out or given off

emission

noun
emis·​sion | \ ē-ˈmi-shən How to pronounce emission (audio) \

Kids Definition of emission

1 : the act of giving off The energy plant is reducing the emission of harmful gases.
2 : something that is given off Scientists can record radio emissions from far-off stars.

emission

noun
emis·​sion | \ ē-ˈmish-ən How to pronounce emission (audio) \

Medical Definition of emission

1 : an act or instance of emitting
2a : 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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More from Merriam-Webster on emission

Spanish Central: Translation of emission

Nglish: Translation of emission for Spanish Speakers

Britannica English: Translation of emission for Arabic Speakers

Britannica.com: Encyclopedia article about emission

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