- the separation of crystalloids from colloids in a solution by diffusion through a membrane.
- the separation of large molecules, as proteins, from small molecules and ions in a solution by allowing the latter to pass through a semipermeable membrane.
- (in kidney disease) the process by which uric acid and urea are removed from circulating blood by means of a dialyzer.
- the separation of small molecules from large molecules and colloids in a solution by the selective diffusion of the small molecules through a semipermeable membrane
- med See haemodialysis, peritoneal dialysis
