blue·​shift | \ ˈblü-ˈshift How to pronounce blueshift (audio) \

Definition of blueshift

: the displacement of the spectrum of an approaching celestial body toward shorter wavelengths

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Other Words from blueshift

blueshifted \ ˈblü-​ˈshif-​təd How to pronounce blueshifted (audio) \ adjective

Examples of blueshift in a Sentence

Recent Examples on the Web Astronomers first studied faraway star surfaces by looking at the redshift or blueshift of light coming from the stars, a technique called Doppler imaging that reveals movement on the stars' surfaces. Jay Bennett, Popular Mechanics, "The Most Detailed Image of Another Star Is Also a Preview of Our Sun's Dying Days," 1 Feb. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'blueshift.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of blueshift

1933, in the meaning defined above

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The first known use of blueshift was in 1933

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Cite this Entry

“Blueshift.” Dictionary, Merriam-Webster, Accessed 2 Jun. 2020.

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