Definition of emission
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
emissiveplay \ē-ˈmi-siv\ adjective
Examples of emission in a Sentence
trying to reduce the emission of greenhouse gases
Recent Examples of emission from the Web
And the effort to reverse the Clean Power Plan regulation on power plant carbon emissions — the rule at the heart of Mr. Obama’s climate change agenda — could take years.
That June 15 vote never happened, though, and Brown and lawmakers are still negotiating an extension of the program, which caps total carbon emissions and requires businesses to buy allowances in order to pollute.
Large European cities from Munich to Madrid are banning or restricting diesel vehicles amid mounting alarm over toxic emissions, presenting a major challenge to European car makers who sell millions of them.
Personal vehicles would still have to undergo an emissions test in 17 counties: Brazoria, Collin, Dallas, Denton, Ellis, El Paso, Fort Bend, Galveston, Harris, Johnson, Kaufman, Montgomery, Parker, Rockwall, Tarrant, Travis and Williamson.
Even if emissions are aggressively reduced, the percentage of the world’s human population affected is expected to reach 48 percent, the researchers found.
The Obama administration’s agreement with China called for reducing U.S. greenhouse emissions by 25 percent to 28 percent of the country’s 2005 levels by 2025.
If emissions of heat-trapping gases such as carbon dioxide or methane aren't cut back, Louisville could experience 43 days of potentially deadly heat by 2050, just 33 years away.
But in the most immediate period and in the current climate debate, scientists have made very clear that human emissions are the cause.
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.
First Known Use of emission
EMISSION Defined for English Language Learners
Definition of emission for English Language Learners
: the act of producing or sending out something (such as energy or gas) from a source
: something sent out or given off
EMISSION Defined for Kids
Definition of emission for Students
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.
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
Seen and Heard
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