fluidity
Americannoun
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fluidities
plural
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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:
Compare this to Celtic's elan and fluidity the night before.
From BBC ● Aug. 20, 2026
Under Pochettino, the U.S. approach was defined by an aggressive pressing system and tactical fluidity, with the team building from a back-three structure that freed its wing backs to exploit overloads when pushing forward.
From Los Angeles Times ● Jul. 12, 2026
In yellow, you see the five areas of the pitch PSG look to occupy at all times while there is more fluidity for the players positioned in the midfield areas.
From BBC ● May 30, 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
A vast seething, hot world of fluidity, and Rine the rascal was at home.
From "Invisible Man" by Ralph Ellison
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 George (George Augustus) Moore
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.
