spherical aberration

noun

: aberration that is caused by the spherical form of a lens or mirror and that gives different foci for central and marginal rays

Examples of spherical aberration in a Sentence

Recent Examples on the Web

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Hubble was initially hobbled by an error during the 94.5-inch primary mirror's fabrication that resulted in an optical defect known as spherical aberration, preventing the telescope from bringing starlight to a sharp focus. —

William Harwood, CBS News, 4 June 2024

Word History

First Known Use

1868, in the meaning defined above

Time Traveler

The first known use of spherical aberration was in 1868

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Cite this Entry

Style

“Spherical aberration.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/spherical%20aberration. Accessed 29 Nov. 2024.

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