cosmic microwave background definition

  • noun:
    • (cosmology) the cooled remnant regarding the hot big bang that fills the whole world and that can be observed these days with an average temperature around 2.725 kelvin
    • (cosmology) the cooled remnant associated with the hot big bang that fills the whole universe and can be viewed today with a typical temperature of approximately 2.725 kelvin

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  • Hypernym for "cosmic microwave background"
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