2
: a continuous moving on or passing by (as of a stream)
3
: a continued flow : flood
a flux of words
4
a
: 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
Synonyms
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
Megan Ulu-Lani Boyanton, The Denver Post, 16 Nov. 2024
Part of that may be in the fact that the women’s roles were in flux as casting was ongoing — Jassi and Keiarna, for example, had no idea who would get the formal flute versus who would be a friend of until the end of filming.
—Shamira Ibrahim, Vulture, 11 Nov. 2024
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 all Example Sentences for flux 
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Noun
For decades, the area was a Latino hub alongside Westwood, Auraria and La Alma Lincoln Park — neighborhoods whose demographics are also in flux today.
—Megan Ulu-Lani Boyanton, The Denver Post, 16 Nov. 2024
Part of that may be in the fact that the women’s roles were in flux as casting was ongoing — Jassi and Keiarna, for example, had no idea who would get the formal flute versus who would be a friend of until the end of filming.
—Shamira Ibrahim, Vulture, 11 Nov. 2024
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 all Example Sentences for flux
Dictionary Entries Near flux
Cite this Entry
“Flux.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/flux. Accessed 30 Nov. 2024.
Copy CitationKids Definition
flux
1 of 2 noun1
a
: a flowing in
flux of the tide
b
: a series of changes : a state of continuous change
2
: a substance used to aid the melting or joining (as by removing impurities) of metals or minerals
flux
2 of 2 verb1
: to become or cause to become fluid : fuse
2
: to treat with a flux
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