osmotic pressure

Noun
  1. (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 (synset 111517281)
    referred to in: physical chemistry - the branch of chemistry dealing with the physical properties of chemical substances
    is a type of: force per unit area, pressure, pressure level - the force applied to a unit area of surface; measured in pascals (SI unit) or in dynes (cgs unit)
    subtypes:
    • hypertonicity - (of a solution) the extent to which a solution has a higher osmotic pressure than some other
    • hypotonicity - (of a solution) the extent to which a solution has a lower osmotic pressure than some other

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