/ˈfluːɪd/, /ˈfluɪd/, /ˈflɪu̯ɪd/
OriginFrom 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.
- countable, uncountableAny 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 an”
- countable, uncountableA 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.”
“The Doctor: Get a good night's sleep and drink plenty of fluids. / Kes: Fluids? / The Doctor: Everybody should drink plenty of fluids.”
“For studying interfaces between solid and another solid, fluid, or gas, a sample can be oriented with its reflecting surface(s) vertical (and with the scattering plane, as defined by nominal incident ”
- colloquial, countable, specifically, uncountableIntravenous fluids.
- not-comparableOf or relating to fluid.
- 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 measu”
- 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.”
- Convertible into cash.
- rareGenderfluid.
“Oh, Loki made sure of that. My mortal parents blamed him for the way I was, for being fluid.”
“As do renewals in genres such as romcoms and teen movies, which have updated sexist, heteronormative tropes to reflect audiences’ fluid, inclusive, queer realities.”
Formsfluids(plural) · more fluid(comparative) · most fluid(superlative)