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fluid
/ˈfluːɪd/
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.
A liquid (as opposed to a solid or gas).
(specifically, typically in the plural) Intravenous fluids.
adjective
Of or relating to fluid.
In a state of flux; subject to change.
Moving smoothly, or giving the impression of a liquid in motion.
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