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

Keep scrolling for more

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

Iceland, for example, has vowed to cut its greenhouse gas emissions by 40 percent by 2030. Andrew Daniels, Popular Mechanics, "Iceland’s Radical Plan to Slow Climate Change," 9 May 2019 As the vice president of the energy and climate practice for 3Degrees, headquartered in San Francisco, Craig helps companies reduce their carbon emissions. Cotton Codinha, Allure, "7 Influential People on Environmental Advocacy in the Beauty Industry," 22 Apr. 2019 Businesses will be allowed to discharge up to 95 percent of their emissions for free for the first three years of the program. Sarah Zimmerman, The Seattle Times, "Oregon close to finalizing cap-and-trade bill," 25 Mar. 2019 The United Kingdom sits atop enormous reserves of natural gas in shale deposits, extraction of which could create jobs, reduce dependence on the likes of Qatar, and cut carbon emissions. The Editorial Board, WSJ, "Britain’s Shale Resignation," 30 Apr. 2019 That’s what Ama Waterways promises with its 14-room Zambezi Queen, designed specifically for this purpose, with eco- friendly features like low-emission generators. Klara Glowczewska, Town & Country, "The Best Places to Travel in 2019," 7 Dec. 2018 Buyers of electric vehicles made by GM and other automakers get federal tax credits of up to $7,500, helping reduce the price as an incentive to get more of the zero-emissions vehicles on the road. Zeke Miller, The Seattle Times, "Trump suggests he’s looking into tariffs on car imports," 28 Nov. 2018 Gas prices typically increase in the spring as oil refineries undergo maintenance and prepare to produce lower-emission fuel blends for the peak summer driving months. Samantha Bomkamp, chicagotribune.com, "Gas prices spike before travel-heavy Memorial Day weekend, but travelers so far are undeterred," 24 May 2018 There have been many flavors of RC-135 built over the years to suit all kinds of intelligence gathering, from geolocating electronic signals to harvesting and analyzing the electronic emissions of potential adversaries. Kyle Mizokami, Popular Mechanics, "Watch a Russian Jet Fighter Intercept a U.S. Air Force Spy Plane," 7 Mar. 2019

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.

See More

First Known Use of emission

1607, in the meaning defined at sense 1a

Keep scrolling for more

Learn More about emission

Statistics for emission

Last Updated

20 May 2019

Look-up Popularity

Time Traveler for emission

The first known use of emission was in 1607

See more words from the same year

Keep scrolling for more

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

Keep scrolling for more

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

Comments on emission

What made you want to look up emission? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a strong desire or propensity

Get Word of the Day daily email!

Test Your Vocabulary

Challenging Vocabulary Quiz Returns!

  • stylized drawing of woman pole vaulting across gap to get trophy
  • Which is a synonym of fuliginous?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Add Diction

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!