emission [ e·mis·sion ]
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Noun
1. The production and discharge of something, especially gas or radiation.
cuts in carbon dioxide emissions
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2. An ejaculation of semen.
nocturnal emissions
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Origin
1. Late Middle English (in the sense ‘emanation’): from Latin emissio(n-), from emiss- ‘sent out’, from the verb emittere (see emit).

