WordNet
cosmic microwave background radiation
n. (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 [syn: cosmic background radiation, CBR, CMBR, cosmic microwave background, CMB]
Usage examples of "cosmic microwave background radiation".
On the observational side, by far the most important development has been the measurement of fluctuations in the cosmic microwave background radiation by COBE (the Cosmic Background Explorer satellite) and other collaborations.
Further, they think the cosmic microwave background radiation is the lingering echo of what they call ‘.