Word.ws English Dictionary

fluid

Syllables: flu·idUK/ˈfluːɪd/

More pronunciations (1)Fewer pronunciations

British/ˈflʉwɪd/

fluid noun: any substance which can flow with relative ease, tends to assume the shape of its container, and obeys Bernoulli's principle; a liquid, gas or plasma.

Noun

fluid (countable and uncountable, plural fluids)

  1. Any substance which can flow with relative ease, tends to assume the shape of its container, and obeys Bernoulli's principle; a liquid, gas or plasma.
    • An extreme version of vorticity is a vortex. The vortex is a spinning, cyclonic mass of fluid, which can be observed in the rotation of water going down a drain, as well as in smoke rings, tornados and hurricanes.2013 March, Frank Fish, George Lauder, “Not Just Going with the Flow”, in American Scientist, volume 101, number 2, archived from the original on 01 May 2013, page 114
  2. A liquid (as opposed to a solid or gas).
    • fluid inclusion Petrology, a tiny fluid- or gas-filled cavity in an igneous rock. 1-100 micrometers in diameter, formed by the entrapment of a fluid, typically that from which the rock crystallized.1992, Christopher G. Morris, Academic Press, Christopher W. Morris, Academic Press Dictionary of Science and Technology, Gulf Professional Publishing, →ISBN, page 854
    • The Doctor: Get a good night's sleep and drink plenty of fluids. / Kes: Fluids? / The Doctor: Everybody should drink plenty of fluids.1995, David Kemper, Michael Piller, “Time and Again”, in Star Trek: Voyager, season 1, episode 4, spoken by The Doctor and Kes (Robert Picardo and Jennifer Lien)
  3. (colloquial, specifically, typically in the plural) Intravenous fluids.

Adjective

fluid (comparative more fluid, superlative most fluid)

  1. (not comparable) Of or relating to fluid.
    Synonyms:
    fluidical
  2. In a state of flux; subject to change.
    • Economics is a messy discipline: too fluid to be a science, too rigorous to be an art. Perhaps it is fitting that economists’ most-used metric, gross domestic product (GDP), is a tangle too. GDP measures the total value of output in an economic territory. Its apparent simplicity explains why it is...2013 August 3, “Boundary problems”, in The Economist, volume 408, number 8847
    Synonyms:
    unstable
  3. Moving smoothly, or giving the impression of a liquid in motion.
    • Tom of the fluid pelvis, undulating about the living room in defiance of Michael's taboo on sensuality.1983 December 31, Kenneth Hale-Wehmann, “The Business of Sex and Affection”, in Gay Community News, volume 11, number 24, page 8
    Synonyms:
    fluent
  4. Convertible into cash.
  5. (rare) Genderfluid.
    • Oh, Loki made sure of that. My mortal parents blamed him for the way I was, for being fluid.2017, Rick Riordan, Magnus Chase and the Hammer of Thor, page 274 (the genderfluid character Alex Fierro is speaking)
    • As do renewals in genres such as romcoms and teen movies, which have updated sexist, heteronormative tropes to reflect audiences’ fluid, inclusive, queer realities.2021 April 24, Adrian Horton, “‘The uprisings opened up the door’: the TV cop shows confronting a harmful legacy”, in The Guardian, →ISSN

fluid meaning in Hindi, Tamil, Urdu and Bengali

fluid in Hindi

any state of matter which can flow
द्रव drav, तरल taral
liquid — see also liquid
द्रव drav, तरल taral
of or relating to fluid
द्रव drav

fluid in Tamil

ஒழுகியல்புடைய, கசியும் தன்மையுள்ள, நீர்த்தன்மையுடைய, நீர்த்தன்மையுள்ள, நெகிழ்வுடைய, பாய்பொருள்

fluid in Urdu

fluid
روان ravān

fluid in Bengali

তরল পদার্থ, তরল, অঘনীভূত, দ্রব
More languagesFewer languages
fluid in Telugu
నీరు nīru
fluid in Malayalam
ദ്രാവകം drāvakaṁ
fluid in Kannada
ಪ್ರವಹಿಸುವ, ಹರಿಯುವ, ದ್ರವಿಸುವ, ನೆಲೆಗೊಳ್ಳದ
fluid in Punjabi
ਤਰਲ taral
fluid in Gujarati
પ્રવાહી pravāhī
fluid in Sanskrit
सर sará, दानु dā́nu, रस rása, वारि vā́ri
fluid in Tagalog
lapuyot
fluid in Arabic
سَائِل sāʔil, مَائِع māʔiʕ
fluid in Indonesian
fluida, cairan, cair
fluid in Thai
ของไหล kɔ̌ɔng-lǎi
fluid in Vietnamese
chất lưu

Examples of fluid in a sentence

  • The choke manifold then expels the fluid or gas to the gas buster or a panic line.2012, Will Pettijohn P.E.C., Oil & Gas Handbook: A Roughneck's guide to the Universe, AuthorHouse, →ISBN, page 23:
  • Economics is a messy discipline: too fluid to be a science, too rigorous to be an art.2013 August 3, “Boundary problems”, in The Economist, volume 408, number 8847:

All 40 example sentences with fluid

Synonyms of fluid

All synonyms of fluid

Forms of fluid

Noun
pluralfluids
Adjective
comparativemore fluid
superlativemost fluid

Plural of fluid: fluids

Origin of fluid

From Middle English fluid, from Latin fluidus (“flowing; fluid”), from Latin fluō (“to flow”), from Proto-Indo-European *bʰleh₁- (“to swell; surge; overflow; run”). Akin to Ancient Greek φλύειν (phlúein, “to swell; overflow”). Not related to English flow, which is a native, inherited word from *plew-, but is distantly related from English bleat.

Words formed from fluid

Phrases with fluid

13 more phrasesFewer phrases

Words that rhyme with fluid

Questions about fluid

What does fluid mean?
Fluid means any substance which can flow with relative ease, tends to assume the shape of its container, and obeys Bernoulli's principle; a liquid, gas or plasma.
What is fluid in Hindi?
Fluid in Hindi is द्रव (drav), तरल (taral). See Fluid meaning in Hindi.
How do you use fluid in a sentence?
The choke manifold then expels the fluid or gas to the gas buster or a panic line.
What part of speech is fluid?
Fluid can be a noun or an adjective.
How do you pronounce fluid?
Fluid is pronounced /ˈfluːɪd/ (UK).
What is the plural of fluid?
The plural of fluid is fluids.

Words near fluid in the dictionary

  1. flugestone
  2. Fluharty
  3. Fluhartys
  4. Fluhr
  5. Fluhrs
  6. fluid
  7. fluid drachm
  8. fluid drachms
  9. fluid dynamics
  10. fluid feeder
  11. fluid feeders

Source and license

Adapted from Wiktionary: fluid (page history and authors); fluid (Tamil Wiktionary) (page history and authors); روان (Urdu) (page history and authors); fluid (Bengali Wiktionary) (page history and authors); నీరు (Telugu) (page history and authors); fluid (Kannada Wiktionary) (page history and authors); दानु (Sanskrit) (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Pronunciation audio from Wikimedia Commons, each file under its own free license: en-us-fluid.ogg.

Cite this entry: “fluid.” Word.ws, https://word.ws/fluid. Based on Wiktionary, CC BY-SA 4.0.