osmotic pressure


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Related to osmotic pressure: osmotic potential

osmotic pressure

n.
The pressure exerted by the flow of water through a semipermeable membrane separating two solutions with different concentrations of solute.

osmotic pressure

n
(Chemistry) the pressure necessary to prevent osmosis into a given solution when the solution is separated from the pure solvent by a semipermeable membrane

osmot′ic pres′sure


n.
the force that a dissolved substance exerts on a semipermeable membrane, through which it cannot penetrate, when separated by it from pure solvent.
[1885–90]

osmotic pressure

The pressure that must be applied to a solution, when separated from a more dilute solution by a semipermeable membrane, to prevent the inflow of solvent molecules.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.osmotic pressure - (physical chemistry) the pressure exerted by a solution necessary to prevent osmosis into that solution when it is separated from the pure solvent by a semipermeable membrane
physical chemistry - the branch of chemistry dealing with the physical properties of chemical substances
force per unit area, pressure, pressure level - the force applied to a unit area of surface; measured in pascals (SI unit) or in dynes (cgs unit); "the compressed gas exerts an increased pressure"
hypertonicity - (of a solution) the extent to which a solution has a higher osmotic pressure than some other
hypotonicity - (of a solution) the extent to which a solution has a lower osmotic pressure than some other
References in periodicals archive ?
The osmotic pressures of Hank's solution and sperm cells measured in Fiske brand micro osmometer device are mOsm/kg and 306 mOsm/kg, respectively.
The osmotic pressure in the several L-proline-containing solutions [Figure 2], red diamond with asterisks] was similar to that in the control ( P > 0.
20] That colloid osmotic pressure does not play the role it was assigned by Ernest Starling is known to many burn surgeons, as burn oedema usually resolves in the face of dropping albumin levels.
Change in osmotic pressure during cryopreservation exerts osmotic stress (Watson, 2000) that results in intra and extra cellular ice crystals formation and leads to irreversible damage to spermatozoa integrity (Hammerstedt et al.
2009) which promoted the reducible sugars accumulation and enhanced resistance against wilting, though improving the plant cell internal osmotic pressure.
Decreased serum protein decreases the osmotic pressure of the blood, leading to loss of fluid from the intravascular compartment, or the blood vessels, to the interstitial tissues, resulting in oedema.
This discussion helps students understand any osmotic pressure change and cell compensation for the vascular volume change.
For example, sodium polyacrylate is a polyelectrolyte SAP and swells due to osmotic pressure effects.
As an energy source in sports drinks, Cluster Dextrin has low osmotic pressure, and empties swiftly from stomach to small intestine.
However, energy expenditures for keeping a membrane integral in conditions of reduced osmotic pressure were facilitated the increase of fluorescence intensiveness, which equaled 314 [+ or -] 28 for plasmocytes and 387 [+ or -] 40 for granulocytes.