emission
[ ih-mish-uhn ]
/ ɪˈmɪʃ ən /
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noun
an act or instance of emitting: the emission of poisonous fumes.
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.
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Origin of emission
First recorded in 1600–10; from Middle French or directly from Latin ēmissiōn- (stem of ēmissiō ), equivalent to ēmiss(us), past participle of ēmittere “to send forth” (ē- “from, out of” + mit-, stem of mittere “to send” + -tus past participle suffix) + -iōn- noun suffix; see origin at emit, e-1, -ion
OTHER WORDS FROM emission
non·e·mis·sion, nounre·e·mis·sion, nounDictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022
How to use emission in a sentence
British Dictionary definitions for emission
emission
/ (ɪˈmɪʃən) /
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 forms of emission
emissive, adjectiveWord Origin for emission
C17: from Latin ēmissiō, from ēmittere to send forth, emit
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Medical definitions for emission
emission
[ ĭ-mĭsh′ən ]
n.
A discharge of fluid from a living body, usually a seminal discharge.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.