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redshift noun

  /ˈɹɛdˌʃɪft/
  • (physics, :, astronomy, relativity) An increase in the wavelength of a photon or of light, corresponding to a lower frequency and a shift toward the red end of the electromagnetic spectrum.
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redshift verb

  /ˈɹɛdˌʃɪft/
  • (physics, :, astronomy, relativity) (ergative) (said of light or a photon) To shift toward the red end of the electromagnetic spectrum; to change to a longer wavelength and a lower frequency.
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