noun
- 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: cosmic background radiation, CBR, CMBR, cosmic microwave background, CMB
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| APA | WordNet. (2010). cosmic microwave background radiation. Retrieved September 26, 2026, from http://smartdefine.org/cosmic_microwave_background_radiation/definitions/1267735 |
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