Fluid
/flˈuəd/
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Definition
(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.
Sentence Examples
This fluid can be substituted for glue.
The plans are still fluid.
CEFR Practice Quiz
The situation remains ____, so we need to be prepared for any sudden changes in plans.