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osmotic pressure
(redirected from Wall pressure)

   Also found in: Medical, Wikipedia, Hutchinson 0.03 sec.
osmotic pressure [äz′mäd·ik ′presh·ər]
(physical chemistry)
The applied pressure required to prevent the flow of a solvent across a membrane which offers no obstruction to passage of the solvent, but does not allow passage of the solute, and which separates a solution from the pure solvent.
The applied pressure required to prevent passage of a solvent across a membrane which separates solutions of different concentration, and which allows passage of the solute, but may also allow limited passage of the solvent. Also known as osmotic gradient.


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The major element of the processing system is a cold wall pressure vessel, installed below floor level.
 
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