red shift

noun

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

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redshift
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Meanings

nounred shift (plural red shifts)

plural red shifts

  1. astronomyLight spectra shifted towards red, as by elongation of light waves from a source moving away from the detector.

Synonyms & antonyms

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

Similar
redshift
Broader
propagation
Also see
redshift

Synonym sets from Open English WordNet, CC BY 4.0.

Cite this entry
APA

red shift. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/red%20shift

MLA

“red shift.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/red%20shift. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “red shift,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/red%20shift.

Source: red shift on Wiktionary, CC BY-SA 4.0.