fluidity
Americannoun
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the quality or state of being fluid.
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Physics.
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the ability of a substance to flow.
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a measure of this ability, the reciprocal of the coefficient of viscosity.
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noun
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the state of being fluid
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physics the reciprocal of viscosity
Other Word Forms
Derived Forms
Inflected Forms
Nouns
Etymology
Origin of fluidity
Explanation
Fluidity is a quality of being graceful or flowing, like the fluidity of a dancer's movements. Things that move with easy, smooth motions have fluidity — think of clouds moving across the sky on a windy day, or the way a modern dancer's body moves. This adjective can also mean "changeable," like the fluidity of ideas being exchanged during a high school debate class. As a physical quality, you might also describe the fluidity of any substance that's fluid, or behaves like a liquid.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
Picardo describes the agreement as introducing "complete and utter fluidity of people and goods" between Gibraltar, on the one hand, and Spain and the EU on the other.
From BBC ● Jul. 12, 2026
Reading these two new plays this year, I was struck by the stylistic vigor and structural fluidity.
From Los Angeles Times ● Jul. 8, 2026
However it manifests, this sexual fluidity marks something of a “Bi Renaissance,” as Gay Times magazine recently called it.
From The Wall Street Journal ● Jun. 14, 2026
The fluidity of the situation in the Middle East is a wildcard for Singapore’s economy.
From The Wall Street Journal ● May 26, 2026
Something in the way the tennis players hold themselves, or the way they toss the ball, or the fluidity of their motion triggers something in his unconscious.
From "Blink" by Malcolm Gladwell
Gerwig’s “Little Women” leans into the book’s fluidities and contradictions, especially among the characters themselves, who are self-sacrificing and ethereal one moment and graspingly materialistic the next.
From Washington Post ● Dec. 18, 2019
His hands pass over the keys and he produces Chopin-like fluidities.
From Confessions of a Young Man by Moore, George (George Augustus)
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
