harmonic analysis

noun

: the expression of a periodic function as a sum of sines and cosines and specifically by a Fourier series

Examples of harmonic analysis in a Sentence

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This was on full display in one of my favorite articles of the year, an account by Kevin Hartnett of how a mathematician named Hannah Cairo solved an important problem in the field of harmonic analysis — at just 17 years old. Jordana Cepelewicz, Quanta Magazine, 18 Dec. 2025 Rajula Srivastava, for contributions in harmonic analysis and analytic number theory, including contributions to the problem of counting rational points near smooth manifolds. Alex Cramer, HollywoodReporter, 6 Apr. 2025 Guth studied it on and off for a few years, only to realize that his techniques from harmonic analysis wouldn’t work. Jordana Cepelewicz, WIRED, 4 Aug. 2024

Word History

First Known Use

1867, in the meaning defined above

Time Traveler
The first known use of harmonic analysis was in 1867

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Cite this Entry

“Harmonic analysis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/harmonic%20analysis. Accessed 29 Dec. 2025.

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