\ ˈfləks How to pronounce flux (audio) \

Definition of flux

 (Entry 1 of 2)

1 : a flowing of fluid from the body: such as
a : diarrhea
b : dysentery
2 : a continuous moving on or passing by (as of a stream)
3 : a continued flow : flood a flux of words
4a : influx
b : change, fluctuation in a state of flux the flux following the death of the emperor
5 : a substance used to promote fusion (as of metals or minerals) especially : one (such as rosin) applied to surfaces to be joined by soldering, brazing, or welding to clean and free them from oxide and promote their union
6 : the rate of transfer of fluid, particles, or energy across a given surface


fluxed; fluxing; fluxes

Definition of flux (Entry 2 of 2)

transitive verb

1 : to cause to become fluid
2 : to treat with a flux

intransitive verb

: to become fluid : fuse

Synonyms & Antonyms for flux

Synonyms: Noun

Synonyms: Verb

Antonyms: Verb

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Examples of flux in a Sentence

Noun the English language is always in a state of flux January typically brings a great flux of returns to department stores. Verb a solid will flux more quickly under pressure
Recent Examples on the Web: Noun Blankenship's victory didn’t last long and now, for the third time in four seasons, Indy's placekicking job has been in flux. Michael Marot, ajc, 13 Sep. 2022 The Fed remains data dependent, which is why rate hike odds are constantly in flux. Paul R. La Monica, CNN, 11 Sep. 2022 Just one position remains in flux: Arizona State transfer Ricky Pearsall and junior Trent Whittemore both are listed as possible starters at slot receiver. Edgar Thompson, Orlando Sentinel, 1 Sep. 2022 With that said, roster construction in the NFL will continue to be in flux over the next several days as teams look to strengthen their clubs with waiver claims and free agent signings from the several hundred players who were released Tuesday. Lorenzo Reyes, USA TODAY, 31 Aug. 2022 Indeed, the 2022 CrossFit Games leaderboard was in flux up until the thirteenth and event, especially on the women’s side. Gabrielle Kassel, Men's Health, 8 Aug. 2022 The media landscape is decidedly different from the early days of the pandemic, and HBO Max remains in flux. Frank Pallotta, CNN, 28 Aug. 2022 Without a Big Ten deal, ESPN has theoretically freed up money to spend as both conferences are currently in flux. Jeremy Cluff, The Arizona Republic, 26 Aug. 2022 Adding to the confusion, state laws are still in flux. Maya T. Prabhu, ajc, 26 Aug. 2022 Recent Examples on the Web: Verb Those signs can flux when sleep deprived, traveling or stressed at work as well. Sandee Lamotte, CNN, 31 Jan. 2020 Next, clean and flux a shutoff valve for the cold side and slide it over the tubing end place and solder it in place. Steve Willson, Popular Mechanics, 24 Aug. 2018 See More

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

First Known Use of flux


14th century, in the meaning defined at sense 1


15th century, in the meaning defined at transitive sense 1

History and Etymology for flux

Noun and Verb

Middle English, from Anglo-French & Medieval Latin; Anglo-French, from Medieval Latin fluxus, from Latin, flow, from fluere to flow — more at fluid

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Time Traveler for flux

Time Traveler

The first known use of flux was in the 14th century

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Dictionary Entries Near flux




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Statistics for flux

Last Updated

24 Sep 2022

Cite this Entry

“Flux.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/flux. Accessed 30 Sep. 2022.

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More Definitions for flux


\ ˈfləks How to pronounce flux (audio) \

Medical Definition of flux

1a : a flowing or discharge of fluid from the body especially when excessive or abnormal: as
(1) : diarrhea
(2) : dysentery
b : the matter discharged in a flux
2 : the rate of transfer of fluid, particles, or energy across a given surface

More from Merriam-Webster on flux

Nglish: Translation of flux for Spanish Speakers

Britannica English: Translation of flux for Arabic Speakers

Britannica.com: Encyclopedia article about flux


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