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/ˈɹɛdˌʃɪft/ · noun
(physics: astronomy, relativity) An increase in the wavelength of a photon or of light, corresponding to a lower frequency and a shift toward the red end of the electromagnetic spectrum..
Use red shift when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Red shift means (physics: astronomy, relativity) An increase in the wavelength of a photon or of light, corresponding to a lower frequency and a shift toward the red end of the electromagnetic spectrum..
The closest synonym depends on the sentence and intended sense.
Possible antonyms include blueshift.
Use red shift where its definition matches the intended context.
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