fluid, any substance that is able to flow. Of the four states of matter states of matter, forms of matter differing in several properties because of differences in the motions and forces of the molecules (or atoms, ions, or elementary particles) of which they are composed.
..... Click the link for more information. , only a solid solid, one of the three commonly recognized states in which matter occurs, i.e., that state, as distinguished from liquid and gas, in which a substance has both a definite shape and a definite volume.
..... Click the link for more information. is not a fluid, since it has a definite shape that is not readily changed. Any liquid liquid, one of the three commonly recognized states in which matter occurs, i.e., that state, as distinguished from solid and gas, in which a substance has a definite volume but no definite shape.
..... Click the link for more information. , gas gas, in physics, one of the three commonly recognized states of matter, the other two being solid and liquid. A substance in the gaseous state has neither definite shape nor definite volume. Like liquids, gases are fluids and assume the shape of their containers.
..... Click the link for more information. , or plasma plasma, in physics, fully ionized gas of low density, containing approximately equal numbers of positive and negative ions (see electron and ion ). It is electrically conductive and is affected by magnetic fields.
..... Click the link for more information. is classed as a fluid.

fluid

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.

fluid

1. a substance, such as a liquid or gas, that can flow, has no fixed shape, and offers little resistance to an external stress

2. capable of flowing and easily changing shape

fluid [′flü·əd]

(physics)

An aggregate of matter in which the molecules are able to flow past each other without limit and without fracture planes forming.

fluid (redirected from electrolyte management)

fluid

fluid
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