English Explanatory Dictionary

fluid

English dictionary entry

Meanings

noun
  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.
  2. A liquid (as opposed to a solid or gas).
  3. Intravenous fluids.
adj
  1. Of or relating to fluid.
  2. In a state of flux; subject to change.
  3. Moving smoothly, or giving the impression of a liquid in motion.
  4. Convertible into cash.
  5. Genderfluid.

Pronunciation

/ˈfluːɪd/ [ˈflʊu̯ɪd] en-us-fluid.ogg /ˈflɪu̯ɪd/ /ˈfljuːɪd/

Word forms

fluid fluids more fluid most fluid

Etymology

Etymology tree Proto-Indo-European *bʰel-der. Proto-Indo-European *bʰlewH-der. Proto-Indo-European *bʰluH-yé-ti? Latin fluō Proto-Indo-European *dʰeh₁-der. Proto-Italic *-iðos Latin -idus Latin fluidusder. Middle English fluid English 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.

Synonyms

liquid variable fluxive runny fluidical unstable fluent

Related words

fluctuate fluctuation fluency fluent fluidal fluidic fluidics fluidify fluidise fluidity fluidize fluidous flux semifluid

Derived words

amber fluid amniotic fluid amniotic fluid embolism base fluid biofluid blinker fluid bodily fluid body fluid brain fluid brake fluid Carrel-Dakin fluid cerebrospinal fluid cleaning fluid computational fluid dynamics corflu correcting fluid correction fluid Cowper's fluid cryofluid cutting fluid dark fluid diesel exhaust fluid drilling fluid elastofluid embalming fluid ferrofluid fluidarity fluid-bonded fluid-bound fluid drachm fluid dynamics fluid-elastic fluid feeder fluidglycerate fluidification fluidiform fluid intelligence fluidisation fluidism fluidist fluidless fluidlike fluid loading fluid measure fluid mechanics fluid ounce fluidram fluidynamics fog fluid gargling fluid gender-fluid geofluid gyrofluid headlight fluid hydraulic fluid interstitial fluid inviscid fluid lacrimal fluid lighter fluid magnetofluid
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