osmotic pressure

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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