cosmic microwave background

English

Etymology

It was originally called the primeval fireball.

Pronunciation

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Noun

cosmic microwave background (uncountable)

  2. (astronomy) Faint thermal radiation that pervades all space and is thought to be the remnants of the Big Bang, produced during the epoch of recombination.
    Alternative forms: CMB, CμB
    Holonyms: cosmic background, cosmic background radiation < electromagnetic radiation < radiation
    Comeronyms: CIRB, CIB, cosmic infrared background; CNB, CνB, CvB, cosmic neutrino background; CGWB, CGB, cosmic gravitational-wave background

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Translations
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