fluid

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Related to Bouin's fluid: Bouin's solution, Bouin's fixative

fluid,

any substance that is able to flow. Of the four states of matterstates 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.
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, only a solidsolid,
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.
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 is not a fluid, since it has a definite shape that is not readily changed. Any liquidliquid,
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.
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, gasgas,
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.
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, or plasmaplasma,
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.
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 is classed as a fluid.

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

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
References in periodicals archive ?
The podia were fixed in Bouin's fluid, embedded in paraplast, and cut into 7 [mu]m thick sections.
The effects of 10% formalin saline, Carnoy's fluid, Zenker's fluid, Helly's fluid and Bouin's fluid on the staining ability of the dye extracted from Morinda lucida on tissue sections were studied.
SUMMARY: The effect of the fixatives: 10% formol saline, Carnoy's fluid, Zenker's fluid, Helly's fluid and Bouin's fluid on the staining ability of the extracts of Pterocarpus osun (P.