Redshift has 2 different meanings across 1 category:
Noun
Noun
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
2
A change in the wavelength of light, in which the wavelength is longer than when it was emitted at the source.
Broader Terms (hypernyms)