Dictionary![]() ![]() red•shiftPronunciation: (red'shift"), [key] —n. Astron. a shift toward longer wavelengths of the spectral lines emitted by a celestial object that is caused by the object moving away from the earth. Also,red' shift".Cf. cosmological redshift, Doppler effect, gravitational redshift. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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