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Meaning of osmotic pressure

osmot'ic pres'sure

Pronunciation: [key]
— Physical Chem. Physical Chem.
  1. the force that a dissolved substance exerts on a semipermeable membrane, through which it cannot penetrate, when separated by it from pure solvent.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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