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Emission may refer to:

Chemical products[edit]

Electromagnetic radiation[edit]

Other uses[edit]

  • 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 ejection of semen from the penis; also, specifically:
  • Noise, emission
  • Exhalation of air, especially in the context of musical instruments

See also[edit]