1. cosmic background radiation

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 microwave background cosmic microwave background radiation CMBR cosmic radiation CBR CMB
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2. background

noun. (ˈbækˌgraʊnd) A person's social heritage: previous experience or training.
Synonyms
heritage inheritance
Antonyms
figure noninterference nonintervention

3. background

noun. (ˈbækˌgraʊnd) Information that is essential to understanding a situation or problem.
Synonyms
background knowledge information
Antonyms
order inactivity regularity

4. background

noun. (ˈbækˌgraʊnd) The part of a scene (or picture) that lies behind objects in the foreground.
Synonyms
panorama aspect scene vista view prospect ground
Antonyms
comprehensibility uncover antecedent absent free

5. background

noun. (ˈbækˌgraʊnd) Relatively unimportant or inconspicuous accompanying situation.
Synonyms
accompaniment co-occurrence attendant concomitant
Antonyms
hide aspect scene vista view

6. background

noun. (ˈbækˌgraʊnd) Extraneous signals that can be confused with the phenomenon to be observed or measured.
Synonyms
ground noise interference background noise disturbance background radiation background signal noise
Antonyms
prospect panorama bring out spotlight play up

7. background

noun. (ˈbækˌgraʊnd) The state of the environment in which a situation exists.
Synonyms
showcase canvass scope setting show window environment canvas
Antonyms
set off highlight CRT screen window screen

8. radiation

noun. (ˌreɪdiːˈeɪʃən) Energy that is radiated or transmitted in the form of rays or waves or particles.
Synonyms
electromagnetic radiation free energy solar radiation nonparticulate radiation electromagnetic wave energy ionizing radiation cosmic radiation
Antonyms
stay in place centralization fold cross concentration
Etymology
radiation (English)
radiatio (Latin)

9. radiation

noun. (ˌreɪdiːˈeɪʃən) The act of spreading outward from a central source.
Synonyms
emanation bombardment emission
Antonyms
activation sink source peristalsis
Etymology
radiation (English)
radiatio (Latin)

10. cosmic

adjective. (ˈkɑːzmɪk) Inconceivably extended in space or time.
Synonyms
big large
Antonyms
little small stingy
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