Red Shift Definition

noun
An increase in the wavelength of radiation emitted by a celestial body as a consequence of the Doppler effect.
American Heritage

(astronomy) Light spectra shifted towards red, as by elongation of light waves from a source moving away from the detector.

Wiktionary
Synonyms:

Other Word Forms of Red Shift

Noun

Singular:
red shift
Plural:
red shifts

Origin of Red Shift

  • From the fact that the longer wavelengths of light are at the red end of the visible spectrum

    From American Heritage Dictionary of the English Language, 5th Edition

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