Definition of osmotic pressure in English:

osmotic pressure

Pronunciation /äzˌmädik ˈpreSHər/ /ɑzˌmɑdɪk ˈprɛʃər/

noun

Chemistry
  • The pressure that would have to be applied to a pure solvent to prevent it from passing into a given solution by osmosis, often used to express the concentration of the solution.

    ‘The driving force for the osmotic pressure is the higher concentration of sodium ions in the beads than in the outside water.’
    • ‘If a U-shaped glass tube were divided in two by a semipermeable membrane and filled with two solutions the osmotic pressure could be shown.’
    • ‘The glucose osmotic pressure in solution with water is proportional to the glucose concentration in the outer solution.’
    • ‘However, it seems that organic acids account for less than half of the osmotic pressure induced by osmotically active compounds other than sugars.’
    • ‘The solution also creates a strong osmotic pressure on the cell walls of bacteria and other micro-organisms, which prevents them from passing substances in or out.’