English dictionary



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English noun: cosmic microwave background radiation

1. cosmic microwave background radiation (phenomenon) (cosmology) the cooled remnant of the hot big bang that fills the entire universe and can be observed today with an average temperature of about 2.725 kelvin


SynonymsCBR, CMB, CMBR, cosmic background radiation, cosmic microwave background


Broader (hypernym)cosmic radiation


Domain categorycosmogeny, cosmogony, cosmology









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