fluidity

noun

flu·​id·​i·​ty flü-ˈi-də-tē How to pronounce fluidity (audio)
1
: the quality or state of being fluid
2
: the physical property of a substance that enables it to flow

Examples of fluidity in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
By this definition, a great many species exhibit some version of gender fluidity. — Elizabeth Kolbert, New Yorker, 22 June 2026 The fluidity of the fabrics felt perfectly in tune with the soaring Paris temperatures. — Rhonda Richford, Footwear News, 29 June 2026 The 25-year-old Phoenix Suns guard has a fluidity, an impossibly fast series of movements, that would have made Sergei Diaghilev proud. — Rachel Davies, Architectural Digest, 12 June 2026 After the final friendly, when a reporter remarked on the team's fluidity and intensity, Pochettino looked satisfied. — Becky Sullivan, NPR, 27 June 2026 See All Example Sentences for fluidity

Word History

First Known Use

1603, in the meaning defined at sense 1

Time Traveler
The first known use of fluidity was in 1603

Rhymes for fluidity

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Browse Nearby Words

fluidify
fluidity
fluidization
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Cite this Entry

“Fluidity.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fluidity. Accessed 7 Jul. 2026.

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Kids Definition

fluidity

noun
flu·​id·​i·​ty flü-ˈid-ət-ē How to pronounce fluidity (audio)
: the quality or state of being fluid

Medical Definition

fluidity

noun
flu·​id·​i·​ty flü-ˈid-ət-ē How to pronounce fluidity (audio)
plural fluidities
1
: the quality or state of being fluid
2
a
: the physical property of a substance that enables it to flow
b
: the reciprocal of viscosity

More from Merriam-Webster on fluidity

Nglish: Translation of fluidity for Spanish Speakers

Britannica.com: Encyclopedia article about fluidity

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