Definition of FLUID (original) (raw)
1
a
: having particles that easily move and change their relative position without a separation of the mass and that easily yield to pressure : capable of flowing
a long screw that forces the fluid chocolate through fine openings—
Technical Survey
b
: subject to change or movement
2
: characterized by or employing a smooth easy style
the ballerina's fluid movements
fluid recitation of his lines
3
a
: available for various uses
: a substance (such as a liquid or gas) tending to flow or conform to the outline of its container
Synonyms
Examples of fluid in a Sentence
Adjective
a substance in a fluid state warm the jam until it is fluid, then spread it over the cake Noun
Please check the fluids in the car's engine. She needs to drink plenty of fluids. Fluid leaked from the car's engine. a bottle of yellow fluid
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.
According to the team, the fluid dynamics involved in periodic cooking may be applicable in other materials research projects. —Andrew Paul, Popular Science, 7 Feb. 2025 Defra Hoff adds her fluid bass commentary, giving the whole album the Hejira-style flow of a singer and musicians thinking out loud together as the songs spill out. —Rob Sheffield, Rolling Stone, 7 Feb. 2025
The fluid inside the blister can spread the herpes zoster virus, which could trigger chickenpox in individuals who haven’t been vaccinated or had it. —Brittany Risher, SELF, 7 Feb. 2025 Even Christian—who identifies as gender fluid, with they or she pronouns and an X marker on her passport—has to remind herself that. —Laura Dannen Redman, AFAR Media, 6 Feb. 2025 See all Example Sentences for fluid 
Word History
Etymology
Adjective and Noun
French or Latin; French fluide, from Latin fluidus, from fluere to flow; akin to Greek phlyzein to boil over
First Known Use
Adjective
1603, in the meaning defined at sense 1a
Noun
1661, in the meaning defined above
Time Traveler
The first known use of fluid was in 1603
Dictionary Entries Near fluid
Cite this Entry
“Fluid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fluid. Accessed 12 Feb. 2025.
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Last Updated: 11 Feb 2025 - Updated example sentences
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