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Dictionary

blue•shift

Pronunciation: (blOO'shift"), [key]
—n. Astron.
a shift toward shorter wavelengths of the spectral lines of a celestial object, caused by the motion of the object toward the observer. Also,blue' shift".

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

blue sheep

blue-sky

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