fluid

adjective
flu·​id | \ ˈflü-əd How to pronounce fluid (audio) \

Definition of fluid

 (Entry 1 of 2)

1a : 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 openingsTechnical Survey
b : subject to change or movement boundaries became fluid
2 : characterized by or employing a smooth easy style the ballerina's fluid movements fluid recitation of his lines
3a : available for various uses a fluid computer program
b : liquid sense 4 fluid assets

fluid

noun

Definition of fluid (Entry 2 of 2)

: a substance (such as a liquid or gas) tending to flow or conform to the outline of its container

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Other Words from fluid

Adjective

fluidly adverb
fluidness noun

Noun

fluidal \ ˈflü-​ə-​dᵊl How to pronounce fluidal (audio) \ adjective
fluidally \ ˈflü-​ə-​dᵊl-​ē How to pronounce fluidally (audio) \ adverb
fluidlike \ ˈflü-​ə-​dᵊl-​ˌlīk How to pronounce fluidlike (audio) \ adjective

Synonyms & Antonyms for fluid

Synonyms: Adjective

flowing, fluent, liquid

Antonyms: Adjective

hard, nonliquid, solid

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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
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Recent Examples on the Web: Adjective

The source said that situation remains fluid, but Cutting is expected to be on hand when training camp begins in late July. Chris Tomasson, Twin Cities, "Vikings long snapper Kevin McDermott calls competition with rookie Austin Cutting ‘a good thing’," 10 June 2019 The situation is fluid, as most roster decisions are. San Diego Union-Tribune, "Padres notes: Naylor makes case to stay in majors; Machado’s ‘bittersweet’ move," 7 June 2019 Hunter is functionally strong, but not extremely fluid or explosive, and lacks natural instincts as a scorer playing off the dribble. Jeremy Woo, SI.com, "2019 NBA Draft Big Board 7.0: Top 100 Prospect Rankings," 5 June 2019 The front of the dress is quite pure and fluid, while the back of the dress is more dramatic—the skirt fans out into a long train. Leena Kim, Town & Country, "Designer Luisa Beccaria Reveals What It Was Really Like to Make Lady Gabriella Windsor's Wedding Dress," 18 May 2019 Its thin, fluid consistency feels weightless on skin. Devon Abelman, Allure, "Beloved Korean Makeup Brand VDL Just Dropped at Ulta," 13 May 2019 Control inputs feel tight and fluid, everything looks really nice, and the user interface is better than ever, which are all real accomplishments. T.c. Sottek, The Verge, "Battlefield V’s single-player stories are the right way to do war games," 20 Nov. 2018 Today: the fluid dynamics of modern painting techniques. Jennifer Ouellette, Ars Technica, "Study: modern masters like Jackson Pollock were “intuitive physicists”," 26 Dec. 2018 That question, known as Denny’s Paradox after the Stanford biologist Mark Denny, was solved by scientists (including me) by studying the fluid dynamics just under the surface as the striders moved. David L. Hu, WSJ, "Robot Design Goes Back to Nature," 9 Nov. 2018

Recent Examples on the Web: Noun

Hospitalization is necessary in severe cases, but even after checking out, patients need lots of rest and plenty of fluids. Caroline Picard, Good Housekeeping, "Here's Why It's Taking Whoopi Goldberg Weeks to Recover From Pneumonia, According to Doctors," 8 Mar. 2019 Limit outdoor exposure, especially during peak heating hours, and drink plenty of fluids. Adam Shaw, Fox News, "'Heat Dome' brings death, misery to US for Fourth of July," 4 July 2018 People who have diarrhea should also rest and drink plenty of fluids. Matthew Diebel, USA TODAY, "More than 200 hit by parasite from Del Monte vegetables; symptoms can include 'explosive' bowel movements," 9 July 2018 Drink lots of water and fluids to replenish your body’s moisture and electrolytes. Jenna Rennert, Vogue, "Does Sunscreen Expire? And Every Other Question You’ve Had About SPF, Answered," 14 May 2019 Wet clutches, which bathe the friction discs in hydraulic fluid, offer smoother engagement. Clifford Atiyeh, Car and Driver, "What You Need to Know about Ford's PowerShift Transmission Problems," 13 May 2019 The treatment plan utilizes both body and facial points, and prior to facial needling, micro-current (a therapeutic electrical stimulation) is used on the muscles and meridians of the face to both boost the Qi and drain fluids. Roxanne Adamiyatt, Town & Country, "What Exactly Is Facial Acupuncture — And Why You Should Try It," 6 Feb. 2019 These painful lesions present as blisters or sores that will have fluid or erupt, Dr. Bhuyan says. Yerin Kim, Seventeen, "What Is Herpes and How Do I Know if I Have It?," 11 Dec. 2018 The reality is that there are no shortcuts: Drinking enough water—64 oz of fluid per day, adding 6-8 oz for every additional cup of dehydrating coffee, alcohol, or soda—is essential for getting rid of a bug. Lauren Valenti, Vogue, "6 All-Natural Strategies for Fighting the Cold and Flu This Winter," 8 Jan. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'fluid.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of fluid

Adjective

1603, in the meaning defined at sense 1a

Noun

1661, in the meaning defined above

History and Etymology for fluid

Adjective and Noun

French or Latin; French fluide, from Latin fluidus, from fluere to flow; akin to Greek phlyzein to boil over

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Statistics for fluid

Last Updated

15 Jun 2019

Look-up Popularity

Time Traveler for fluid

The first known use of fluid was in 1603

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More Definitions for fluid

fluid

adjective

English Language Learners Definition of fluid

 (Entry 1 of 2)

: capable of flowing freely like water
used to describe something that can change easily or that changes often
: having or showing a smooth and easy style

fluid

noun

English Language Learners Definition of fluid (Entry 2 of 2)

: a substance that is able to flow freely : a liquid substance

fluid

adjective
flu·​id | \ ˈflü-əd How to pronounce fluid (audio) \

Kids Definition of fluid

 (Entry 1 of 2)

1 : capable of flowing like a liquid or gas fluid lava
2 : having a graceful or flowing style or appearance a dancer's fluid movement

Other Words from fluid

fluidly adverb

fluid

noun

Kids Definition of fluid (Entry 2 of 2)

: something that tends to flow and take the shape of its container

fluid

adjective
flu·​id | \ ˈflü-əd How to pronounce fluid (audio) \

Medical Definition of fluid

 (Entry 1 of 2)

: 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

fluid

noun

Medical Definition of fluid (Entry 2 of 2)

: a substance (as a liquid or gas) tending to flow or conform to the outline of its container specifically : one in the body of an animal or plant — see cerebrospinal fluid, seminal fluid

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More from Merriam-Webster on fluid

Rhyming Dictionary: Words that rhyme with fluid

Thesaurus: All synonyms and antonyms for fluid

Spanish Central: Translation of fluid

Nglish: Translation of fluid for Spanish Speakers

Britannica English: Translation of fluid for Arabic Speakers

Britannica.com: Encyclopedia article about fluid

Comments on fluid

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