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[bloo-shift] /ˈbluˌʃɪft/
noun, Astronomy
a shift toward shorter wavelengths of the spectral lines of a celestial object, caused by the motion of the object toward the observer.
Origin of blueshift
1950-55; blue + shift Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for blueshift
  • blueshift and redshift is measured by looking at the frequency of light.
British Dictionary definitions for blueshift


a shift in the spectral lines of a stellar spectrum towards the blue end of the visible region relative to the wavelengths of these lines in the terrestrial spectrum: a result of the Doppler effect caused by stars approaching the solar system Compare redshift
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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