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.
At a moment when ambitious podcasts are hard to come by, the zealous fluidity of Fear No Man stands out. Benjamin Cannon, The Atlantic, 23 Dec. 2025 This genre fluidity allows the spiritual to heighten the narrative, dealing with archetypes like the supernaturally gifted musician. Robert Lang, Deadline, 18 Dec. 2025 Multipolarity, meanwhile, in which three or more great powers are present, is said to be the most prone to war because alliances are precarious and the fluidity of alignments makes the balance of power harder to estimate. Jennifer Lind, Foreign Affairs, 12 Dec. 2025 The brand sources leather exclusively from colder climates, where fibers tighten under temperature, ensuring structure without compromising fluidity. Skylar Mitchell, Essence, 10 Dec. 2025 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

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Cite this Entry

“Fluidity.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fluidity. Accessed 1 Jan. 2026.

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

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