Usually means: Remnant radiation from the Big Bang.
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We found 13 dictionaries that define the word cosmic background radiation:

General (11 matching dictionaries)
  1. cosmic background radiation: Merriam-Webster
  2. cosmic background radiation: American Heritage Dictionary of the English Language
  3. cosmic background radiation: Vocabulary.com
  4. cosmic background radiation: Wiktionary
  5. cosmic background radiation: Infoplease Dictionary
  6. cosmic background radiation: Dictionary.com
  7. Cosmic background radiation: Wikipedia, the Free Encyclopedia
  8. cosmic background radiation: Rhymezone
  9. cosmic background radiation: FreeDictionary.org
  10. cosmic background radiation: Mnemonic Dictionary
  11. cosmic background radiation: TheFreeDictionary.com

Computing (1 matching dictionary)
  1. cosmic background radiation: Encyclopedia

Science (1 matching dictionary)
  1. Cosmic Background Radiation: Extragalactic Astronomy

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Definitions from Wiktionary (cosmic background radiation)

▸ noun:  (astronomy) All the electromagnetic radiation entering the Earth from non-point sources in deep space.

Similar:
cosmic infrared background, cosmic radiation, cosmic microwave background, cosmic neutrino background, extragalactic background light, cosmic ray, background radiation, solar radiation, background, cosmic dust, more...

Phrases:
cosmic microwave background radiation, Discovery of cosmic microwave background radiation, more...

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Similar:
cosmic infrared background, cosmic radiation, cosmic microwave background, cosmic neutrino background, extragalactic background light, cosmic ray, background radiation, solar radiation, background, cosmic dust, more...

Phrases:
cosmic microwave background radiation, Discovery of cosmic microwave background radiation, more...



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