Definition of background radiation in English:

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background radiation

noun

[mass noun] Astronomy
The uniform microwave radiation remaining from the Big Bang.
Example sentences
  • This microwave interference came to be recognized as cosmic background radiation, a remnant of the Big Bang.
  • We are also exposed to naturally occurring radiation or background radiation.
  • It's called the cosmic background radiation - radiation that originated in that primordial fire ball.

For editors and proofreaders

Line breaks: back|ground ra¦di|ation

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