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

Additionally, a third-party group is attacking VW over its 2015 emissions scandal. Washington Post, "GOP officials rehash old fight against Volkswagen union vote," 7 June 2019 California backs the tighter emissions standards, along with more than a dozen states. William Thornton | Wthornton@al.com, al.com, "Most of Alabama’s automakers want Trump to rethink emissions standards," 7 June 2019 The automakers, for one, fear that the Trump Administration’s bold rollbacks will lead to more aggressive state policies, particularly from California which has legal authority to make its emissions standards. Justin Worland, Time, "The World's Largest Automakers Asked Trump Not to Loosen a Climate Change Standard. Here's Why," 7 June 2019 There's also a new sport exhaust, fitted with a fuel particulate filter to meet Europe's current emissions standards, because not every part of building a new car can be fun. Annie White, Car and Driver, "The 2020 Mini JCW Countryman and Clubman Get More Power," 14 May 2019 The Sacramento plan comes as cities and states are increasingly taking the lead on promoting electric vehicles, while the federal government backtracks on cleaner emissions standards. Patrick Sisson, Curbed, "Sacramento’s $44 million plan to become the U.S. electric car capital," 17 July 2018 The company makes lightweight automotive plastics, a product in increasing demand in an era of tightening emissions standards requiring lighter vehicles that get better gas mileage. Mary Ellen Klas, miamiherald, "Rick Scott and family made $550M in one transaction. How 'blind' is his blind trust?," 11 July 2018 But under Trump, the EPA declared last year that the old rule exceeded federal law by setting emissions standards that power plants could not reasonably meet. Matthew Brown, BostonGlobe.com, "Trump replacement for Obama climate plan moves forward," 10 July 2018 Environmental groups expressed dismay when he was tapped to lead the federal agency, and Pruitt has since sought to roll back various environmental regulations, including Obama-era car emission standards. Michael Boren, Philly.com, "Scott Pruitt resigns at EPA; Andrew Wheeler to take over," 5 July 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

17 Jun 2019

Look-up Popularity

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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