redshift

• red shift

From red +‎ shift.

• IPA^(key): /ˈɹɛdˌʃɪft/ (enPR: rĕd'-shĭftˌ)

• Audio (US):

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• Rhymes: -ɛdʃɪft
• Hyphenation: red‧shift

redshift (countable and uncountable, plural redshifts)

1. (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.

   Antonym: blueshift

redshift (third-person singular simple present redshifts, present participle redshifting, simple past and past participle redshifted)

1. (physics: astronomy, relativity) (ergative) (said of light or a photon) To shift toward the red end of the electromagnetic spectrum; to change to a longer wavelength and a lower frequency.

   Antonym: blueshift

• Doppler effect