Any state of matter which can flow with relative ease, tends to assume the shape of its container, and obeys Bernoulli's principle; a liquid, gas or plasma
Substance is a liquid or gaseous state; substance containing particles which move and change position without separation of the mass
Having particles which easily move and change their relative position without a separation of the mass, and which easily yield to pressure; capable of flowing; liquid or gaseous
A fluid is a liquid. The blood vessels may leak fluid, which distorts vision Make sure that you drink plenty of fluids. fluid retention
A situation that is fluid is unstable and is likely to change often. = changeable. a liquid gas, solid solid. Any liquid or gas that cannot sustain a shearing force when at rest and that undergoes a continuous change in shape (see flow) when subjected to such a stress. Compressed fluids exert an outward pressure that is perpendicular to the walls of their containers. A perfect fluid lacks viscosity, but real fluids do not. seminal fluid cerebrospinal fluid fluid mechanics
(1) having particles that easily move and change their relative position without a separation of the mass and that easily yields to pressure: capable of flowing; (2) a substance (as a liquid or gas) tending to flow or conform to the outline of its container
Any material or substance that changes shape uniformly in response to an external force imposed upon it The term applies to liquids, gases and finely divided solids