fluid

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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 ?
Individual tolerance or familiarization with fluid replacement could explain the cessation of exercise by two women at 45 and 50-min exercise in LV and HV respectively, when a maximum score of "urge to urinate" was indicated.
A mathematical model will be used to demonstrate the interactive effects of body mass, body composition, running speed, and weather on sweating rate and sweat electrolyte losses; to consider the impact of carbohydrate and electrolyte replacement; and to evaluate the adequacy of newly proposed fluid replacement recommendations for sustaining appropriate hydration during marathon competition.
For patients requiring substantial fluid replacement, intravenous therapy or hypodermoclysis may be alternatives (Iggulden, 1999; Weinberg et al., 1995).
Pittas do tend to overheat and have a special need for fluid replacement when exercising.
And don't forget that fluid replacement sachets are a great hangover cure.
Fluid replacement was calculated as the volume of fluid ingested during the warm-up and TT expressed as a percentage of the total loss in body mass.
Prospective and controlled clinical trials on fluid replacement during exercise should be performed both in the laboratory and in the field.
Besides intravenous fluid replacement, the main types of symptomatic treatment for the more severe exfoliative conditions are the same as for burns--debridement, dressings, growth factors, and aggressive monitoring for infection and for fluid and electrolyte disturbances, Dr.
However, since mortality is virtually negligible in otherwise healthy infants and the illness is self-resolving with oxygen and fluid replacement, the adage of first doing no harm prevails.
Sports drinks are an efficient fluid replacement since they also provide carbohydrates and sodium.
Sodium replenishment and fluid replacement are the keys
Isotonic saline for fluid replacement is chosen because it remains in the extracellular fluid space and quickly corrects plasma volume, thus raising the blood pressure (Kitabchi & Wall, 1995).