emission

[ ih-mish-uh n ]
/ ɪˈmɪʃ ən /

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

OTHER WORDS FROM emission

non·e·mis·sion, noun re·e·mis·sion, noun

Example sentences from the Web for emission

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 gun at 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, adjective

Word Origin for emission

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

Medical definitions for emission

emission
[ ĭ-mĭshən ]

n.

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