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Cosmic microwave background radiation
/kˈɑzmɪk
mˈaɪkrəwˌeɪv
bˈækgrˌaʊnd
rˌeɪdiˈeɪʃən/
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Cosmic microwave background radiation
noun
1.
(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.
Synonyms:
CBR
,
CMB
,
CMBR
,
cosmic background radiation
,
cosmic microwave background
.
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Etymology of 'Cosmic microwave background radiation'
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