Skip to definition.
Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps


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

Derived forms: red shifts, redshifts

Type of: propagation

Encyclopedia: Redshift