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emission

Line breaks: emis|sion
Pronunciation: /ɪˈmɪʃ(ə)n
 
/

Definition of emission in English:

noun

[mass noun]
1The production and discharge of something, especially gas or radiation: the effects of lead emission on health [count noun]: cuts in carbon dioxide emissions
More example sentences
  • This random emission of photons leaves the resulting electron beam with a fuzzy, rather than a sharply defined focus.
  • Radioactivity is the process of emission of radiation as a radioactive material changes form, often to a different element.
  • Radiation emission from mobile phones must be cut by 80 per cent, a group of UK MPs said yesterday.
Synonyms
1.1 [count noun] An ejaculation of semen: nocturnal emissions
More example sentences
  • Even well into this century, versions of this dire belief - that one's bodily supply of energy could be squandered by sexual emissions - hung on.

Origin

late Middle English (in the sense 'emanation'): from Latin emissio(n-), from emiss- 'sent out', from the verb emittere (see emit).

More
  • An emission is literally something sent out, coming from Latin emittere ‘to send out’. An emissary (early 17th century) is a person sent out, and comes from Latin emissarius ‘scout, spy’, from emittere. Emit (early 17th century) is from the same source.

Definition of emission in:

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