Definition of dialysis in English:


Pronunciation /dīˈaləsəs/ /daɪˈæləsəs/

See synonyms for dialysis

Translate dialysis into Spanish


  • 1Chemistry
    The separation of particles in a liquid on the basis of differences in their ability to pass through a membrane.

    ‘Both RC-bound Zn ions can be removed by equilibrium dialysis against a metal chelating resin.’
    • ‘The fraction which precipitated upon dialysis against water represented a 5-fold purification.’
    • ‘The unit causes electric dialysis by producing electromagnetic oscillations in the water.’
    • ‘Free dye was removed by Sephadex 50 column followed by dialysis against rigor solution.’
    • ‘The profile for free thyroxine is that obtained using equilibrium dialysis and low sample dilution.’
    1. 1.1Medicine The clinical purification of blood by dialysis, as a substitute for the normal function of the kidney.
      ‘Kidney transplants are an alternative to dialysis when both kidneys have ceased to function.’
      • ‘Mr Gilpin needed renal dialysis to stay alive.’
      • ‘The man had to visit his doctor three times a week for renal dialysis.’
      • ‘Occasionally, hypercalcemia can develop in patients with advanced renal failure and who have been receiving long-term dialysis.’
      • ‘And the numbers of people starting dialysis for kidney failure fell by two thirds and there were huge cost savings.’


Mid 19th century via Latin from Greek dialusis, from dialuein ‘split, separate’, from dia ‘apart’ + luein ‘set free’.