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Haemodialysis

(Science: nephrology, procedure) The removal of certain elements from the blood by virtue of the difference in the rates of their diffusion through a semipermeable membrane, for example, by means of a haemodialysis machine or filter.

Origin: gr. Lysis = dissolution dialysis of the blood to remove toxic substances or metabolic wastes from the bloodstream; used in the case of kidney failure.A medical process where poisonous or excess substances in the blood are removed.