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Emission may refer to:

Emission of chemical products:

Emission of electromagnetic radiation:

Other uses:

  • Thermionic emission, the flow of charged particles called thermions from a charged metal or a charged metal oxide surface, archaically known as the Edison effect
  • Ejaculation, the ejecting of semen from the penis; also, specifically:
  • Noise emission
  • Exhalation of air, especially in the context of musical instruments

See also[edit]