Emission is defined as the discharge of some substance, such as a gas, or the thing that is discharged.(noun)
Fumes that come off your car when you drive are an example of an emission.
See emission in Webster's New World College Dictionary
Origin: L emissio < pp. of emittere
See emission in American Heritage Dictionary 4
Origin: Latin ēmissiō, ēmissiōn-, a sending out
Origin: , from ēmissus
Origin: , past participle of ēmittere, to send out; see emit.
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