osmotic pressure: Meaning and Definition of

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.