Cmbr

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    Initialism of cosmic microwave background radiation. abbreviation, alt-of, initialism, uncountable
  2. 2
    (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 wordnet

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