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Noun: redshift  'red,shift
  1. (astronomy) a shift in the spectra of very distant galaxies toward longer wavelengths (toward the red end of the spectrum); generally interpreted as evidence that the universe is expanding
    - red shift
Verb: redshift  'red,shift
  1. (of radiation) change frequency due to relative motion or expansion of the universe

Derived forms: redshifted, red shifts, redshifts, redshifting

Type of: propagation

Encyclopedia: Redshift