WordReference Random House Unabridged Dictionary of American English © 2026
osmot′ic pres′sure, [Physical Chem.]
  1. Chemistrythe force that a dissolved substance exerts on a semipermeable membrane, through which it cannot penetrate, when separated by it from pure solvent.
  • 1885–90

Collins Concise English Dictionary © HarperCollins Publishers::
osmotic pressure n
  1. the pressure necessary to prevent osmosis into a given solution when the solution is separated from the pure solvent by a semipermeable membrane
'osmotic pressure' also found in these entries (note: many are not synonyms or translations):
hypertonic - hypotonic - isotonic - osmoregulation - osmometry - root pressure - solion

Forum discussions with the word(s) "osmotic pressure" in the title:


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