redshift

noun

red·​shift ˈred-ˈshift How to pronounce redshift (audio)
: a displacement of the spectrum of a celestial body toward longer wavelengths that is a consequence of the Doppler effect or the gravitational field of the source
also : a measurement of a celestial body's redshift equal to the ratio of the displacement of a spectral line to its known unshifted wavelength and used especially to calculate the body's distance from earth
redshifted adjective

Examples of redshift in a Sentence

Recent Examples on the Web Even galaxies from just a few hundred million years after the Big Bang (redshifts of 7 and above), which had previously been only observed by Hubble as blobs of light, seem to be being resolved by Webb as having some kind of structure. Georgina Torbet, Ars Technica, 10 June 2024 That differential subtracts from the redshift on the near side and adds to it on the far side, making the void look artificially elongated. Michael D. Lemonick, Scientific American, 1 Jan. 2024 The spectrum was measured by how much a galaxy’s light is stretched by the expansion of the universe, and in the case of the most distant galaxy known, it was measured with a redshift of about 14. Greg Wehner, Fox News, 31 May 2024 Ultimately, the project found and studied more than 1,500 of the telltale stellar explosions, many of them with high redshifts from the far depths of the cosmos. Ashley Balzer Vigil, Scientific American, 24 Jan. 2024 See all Example Sentences for redshift 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'redshift.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1923, in the meaning defined above

Time Traveler
The first known use of redshift was in 1923

Dictionary Entries Near redshift

Cite this Entry

“Redshift.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/redshift. Accessed 2 Jul. 2024.

Kids Definition

redshift

noun
red·​shift ˈred-ˈshift How to pronounce redshift (audio)
: displacement of a spectrum especially of a heavenly body toward longer wavelengths

More from Merriam-Webster on redshift

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