cosmic microwave background

/ˌkɑzmɪk ˌmaɪkrəˈweɪv ˌbækˈgraʊnd/
IPA guide

Definitions of cosmic microwave background
  1. 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: CBR, CMB, CMBR, cosmic background radiation, cosmic microwave background radiation
    see moresee less
    type of:
    cosmic radiation
    radiation coming from outside the solar system
Cite this entry
Style:
MLA
  • MLA
  • APA
  • Chicago

Copy citation
DISCLAIMER: These example sentences appear in various news sources and books to reflect the usage of the word ‘cosmic microwave background'. Views expressed in the examples do not represent the opinion of Vocabulary.com or its editors. Send us feedback
Word Family