Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun physics A change in the wavelength of light, in which the wavelength is longer than when it was emitted at the source.
  • noun politics The statistical bias towards Republican (or Blue Dog) candidates of US federal elections whose reported results vary considerably from those indicated by voter exit polls.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun (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

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

red +‎ shift

Examples

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