An emissionof something such as gas or radiation is the release of it into the atmosphere.
[formal]
The emission of gases such as carbon dioxide should be stabilised at their presentlevel. [+ of]
Sulfur emissions from steel mills become acid rain.
Synonyms: giving off or out, release, shedding, leak More Synonyms of emission
emission in British English
(ɪˈmɪʃən)
noun
1.
the act of emitting or sending forth
2.
energy, in the form of heat, light, radio waves, etc, emitted from a source
3.
a substance, fluid, etc, that is emitted; discharge
4.
a measure of the number of electrons emitted by a cathode or electron gun
at 1000°C the emission is 3 mA
See also secondary emission, thermionic emission
5. physiology
any bodily discharge, esp an involuntary release of semen during sleep
6.
an issue, as of currency
Derived forms
emissive (eˈmissive)
adjective
Word origin
C17: from Latin ēmissiō, from ēmittere to send forth, emit
emission in American English
(iˈmɪʃən; ɪˈmɪʃən)
noun
1.
the act of emitting; issuance
; specif.,
a.
the transmission of radio waves
b.
the ejection of electrons from a surface by heat, radiation, etc.
c.
a discharge of fluid from the body; esp., an involuntary discharge of semen
2.
something emitted; discharge
Word origin
L emissio < pp. of emittere
emission in Automotive Engineering
(ɪmɪʃən)
Word forms: (regular plural) emissions
noun
(Automotive engineering: Fuels, oils, emissions, and other fluids)
An emission of something such as gas or vapor is the release of it into the atmosphere.
The emission of gases such as carbon dioxide should be stabilized at their present level.
Transport causes emission of carbon dioxide which in turn causes global climate changes.
Environmental legislation has introduced tighter controls on peak emission of hydrocarbons.
exhaust emissions
emission in Chemical Engineering
(ɪmɪʃən)
Word forms: (regular plural) emissions
noun
(Chemical Engineering: Chemical waste management)
An emission is a pollutant which is discharged to the environment in a gas or vapor.
The oxygen content promotes more complete combustion of gasoline, which reduces tailpipeemissions of carbon monoxide.
Burning fossil fuels release emissions that are harmful to the environment.
An emission is a pollutant which is discharged to the environment in a gas or vapor.
Examples of 'emission' in a sentence
emission
He called for novices to clean up Bardo's strong-smelling emission.
Zindell, David THE BROKEN GOD (1994)
No chemist, Pitt could only assume the strange emission was caused by some sort of chemical reaction from the decaying slime.
Cussler, Clive INCA GOLD (1994)
In other languages
emission
British English: emission NOUN
An emission of something such as gas or radiation is the release of it into the atmosphere.
The emission of gases such as carbon dioxide should be stabilized at their present level.
American English: emission
Brazilian Portuguese: emissão
Chinese: 排放
European Spanish: emisión
French: émission
German: Emission
Italian: emissione
Japanese: 排出
Korean: 방출
European Portuguese: emissão
Latin American Spanish: emisión
All related terms of 'emission'
re-emission
the quality or state of being re-emitted ; the re-emitting of something
back emission
the secondary emission of electrons from an anode
low-emission
A low-emission vehicle is one that does not produce much pollution . A low-emission zone is an area where vehicles that produce pollution are not allowed or have to pay to enter .
zero-emission
A zero-emission vehicle does not produce any dangerous gases.
emission nebula
a type of nebula that emits visible radiation
field emission
the emission of electrons from a solid or liquid subjected to a high electric field
emission spectrum
the continuous spectrum or pattern of bright lines or bands seen when the electromagnetic radiation emitted by a substance is passed into a spectrometer . The spectrum is characteristic of the emitting substance and the type of excitation to which it is subjected
nocturnal emission
an ejaculation of semen that occurs during sleep , esp while dreaming
secondary emission
the emission of electrons ( secondary electrons ) from a solid as a result of bombardment with a beam of electrons, ions , or metastable atoms : used in electron multipliers
thermionic emission
the emission of electrons from very hot solids or liquids: used for producing electrons in valves , electron microscopes , X-ray tubes , etc
positron emission tomography
a technique for assessing brain activity and function by recording the emission of positrons from radioactively labelled substances, such as glucose or dopamine
Chinese translation of 'emission'
emission
(ɪˈmɪʃən) (frm)
n pl
废(廢)物 (fèiwù)
(noun)
Definition
the act of giving out heat, light, a smell, etc.
the emission of gases such as carbon dioxide
Synonyms
giving off or out
release
releases of cancer-causing chemicals
shedding
leak
radiation
They study energy radiation from the most violent stars in the universe.
discharge
They develop a fever and a watery discharge from the eyes.
transmission
venting
issue
diffusion
utterance
ejaculation
The ejaculation of seminal fluid is neither harmful nor abnormal.
outflow
an increasing outflow of refugees from the country
issuance
ejection
the ejection of an electron by an atomic nucleus
exhalation
These plants give off a poisonous exhalation at night.
emanation
The human body is surrounded by an aura of infrared emanations.
exudation
Additional synonyms
in the sense of discharge
Definition
a pouring out of a fluid
They develop a fever and a watery discharge from the eyes.
Synonyms
emission,
flow,
ooze,
secretion,
excretion,
pus,
seepage,
suppuration
in the sense of ejaculation
The ejaculation of seminal fluid is neither harmful nor abnormal.