fluc·​tu·​a·​tion | \ ˌflək-chə-ˈwā-shən How to pronounce fluctuation (audio) , -chü-ˈā- \
plural fluctuations

Definition of fluctuation

: an act or instance of fluctuating : an irregular shifting back and forth or up and down in the level, strength, or value of something Small fluctuations in prices are to be expected. Some fluctuation in real estate values is not unusual. North American species in general, having contended with blazing July days and frosty September nights as they evolved, are much more tolerant of temperature fluctuations than tropical species are.— Jonathan Franzen

Other Words from fluctuation

fluctuational \ ˌflək-​chə-​ˈwā-​shnəl How to pronounce fluctuation (audio) , -​shə-​nᵊl , -​chü-​ˈā-​ \ adjective

Synonyms for fluctuation


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First Known Use of fluctuation

15th century, in the meaning defined above

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Time Traveler for fluctuation

Time Traveler

The first known use of fluctuation was in the 15th century

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Dictionary Entries Near fluctuation



fluctuat nec mergitur

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Cite this Entry

“Fluctuation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fluctuation. Accessed 19 May. 2022.

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More Definitions for fluctuation


fluc·​tu·​a·​tion | \ ˌflək-chə-ˈwā-shən How to pronounce fluctuation (audio) \

Medical Definition of fluctuation

1 : a motion like that of waves especially : the wavelike motion of a fluid collected in a natural or artificial cavity of the body observed by palpation or percussion
2a : a slight and nonheritable variation especially : such a variation occurring in response to environmental factors
b : recurrent and often more or less cyclic alteration (as of form, size, or color of a bodily part)

Other Words from fluctuation

fluctuate \ ˈflək-​chə-​ˌwāt How to pronounce fluctuation (audio) \ verb fluctuated; fluctuating

More from Merriam-Webster on fluctuation

Nglish: Translation of fluctuation for Spanish Speakers

Britannica English: Translation of fluctuation for Arabic Speakers


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