Definition of emission in English:


Syllabification: e·mis·sion
Pronunciation: /əˈmiSH(ə)n


1The production and discharge of something, especially gas or radiation: the effects of lead emission on health 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.
discharge, release, outpouring, outflow, leak, excretion, secretion, ejection;
1.1An ejaculation of semen.
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.


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

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Pronunciation: ˌōlēˈajənəs
rich in, covered with, or producing oil; oily