(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
DISCLAIMER: These example sentences appear in various news sources and books to reflect the usage of the word ‘CMBR'.
Views expressed in the examples do not represent the opinion of Vocabulary.com or its editors.
Send us feedback
Word Family
2 million people are mastering new words.Master a word
Sign up now (it’s free!)
Whether you’re a teacher or a learner, Vocabulary.com can put you or your class on the path to systematic vocabulary improvement.