emission

[ih-mish-uh n]

See more synonyms for emission on Thesaurus.com

noun

an act or instance of emitting: the emission of poisonous fumes.
something that is emitted; discharge; emanation.
an act or instance of issuing, as paper money.

Electronics. a measure of the number of electrons emitted by the heated filament or cathode of a vacuum tube.
an ejection or discharge of semen or other fluid from the body.
the fluid ejected or discharged.

Origin of emission

1600–10; (< Middle French) < Latin ēmissiōn- (stem of ēmissiō), equivalent to ēmiss(us), past participle of ēmittere to emit (ē- e-¹ + mit- send + -tus past participle suffix) + -iōn- -ion

Related formsnon·e·mis·sion, nounre·e·mis·sion, noun

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for emission

discharge, radiation, emanation, transmission, utterance, ejection, exhalation, issue, ejaculation, shedding, exudation

Examples from the Web for emission

Contemporary Examples of emission

The DEP has authority only over manufacturing or emission sites, not mere storage sites, as this one is.
The Charleston Water Saga
Michael Tomasky
January 14, 2014
As in: At current emission levels, we will suffer Total Weather Apocalypse by 2050.
Great Weekend Reads
The Daily Beast
February 12, 2011
Emission reductions from recycling are not massive, but they are still significant.
Will the Recession Kill Recycling?
Ken Lee
July 11, 2009

Historical Examples of emission

If it isn't, the emission of the light itself gives it a kick that moves it.
The Ultimate Weapon
John Wood Campbell
It is the sexual excitement more than the emission which exhausts.
Searchlights on Health: Light on Dark Corners
B.G. Jefferis
Fenellan, would have discharged an extinguisher on punctilio in emission.
One of Our Conquerors, Complete
George Meredith
The sound of the name represents the emission of breath from the mouth.
The Myths of the North American Indians
Lewis Spence
A small aperture, about the middle of it, sufficed for the emission of his words.
Odd Volume
Various

British Dictionary definitions for emission

emission

noun

the act of emitting or sending forth
energy, in the form of heat, light, radio waves, etc, emitted from a source
a substance, fluid, etc, that is emitted; discharge
a measure of the number of electrons emitted by a cathode or electron gunat 1000°C the emission is 3 mA See also secondary emission, thermionic emission
physiol any bodily discharge, esp an involuntary release of semen during sleep
an issue, as of currency

Derived Formsemissive, adjective

Word Origin for emission

C17: from Latin ēmissiō, from ēmittere to send forth, emit

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for emission

early 15c., "something sent forth," from Middle French émission (14c.) and directly from Latin emissionem (nominative emissio) "a sending out, projecting, hurling, letting go, releasing," from past participle stem of emittere "send out" (see emit). Meaning "a giving off or emitting" is from 1610s.

emission in Medicine

emission

[ĭ-mĭsh′ən]

A discharge of fluid from a living body, usually a seminal discharge.