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1. (n.) osmotic pressure
the force that a dissolved substance exerts on a semipermeable membrane, through which it cannot penetrate, when separated by it from pure solvent.
Etymology: (1885–90)
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| Definition of 'osmotic pressure' |
Princeton's WordNet |
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1. (noun) 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
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| Definition of 'osmotic pressure' |
U.S. National Library of Medicine |
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1. osmotic pressure
The pressure required to prevent the passage of solvent through a semipermeable membrane that separates a pure solvent from a solution of the solvent and solute or that separates different concentrations of a solution. It is proportional to the osmolality of the solution.
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Definitions of osmotic pressure 
