dialysis

di·al·y·sis   (dī-āl'ĭ-sĭs)    n.   pl. di·al·y·ses (-sēz') The separation of smaller molecules from larger molecules or of dissolved substances from colloidal particles in a solution by selective diffusion through a semipermeable membrane. Hemodialysis. [Greek dialusis, separating, dissolution, from dialūein, to break up, dissolve : dia-, apart; see dia- + lūein, to loosen; see leu- in Indo-European roots.] di'a·lyt'ic (-ə-lĭt'ĭk) adj., di'a·lyt'i·cal·ly adv.

dialysis [(deye-al-uh-sis)]

The separation of large molecules from small molecules by passage through a membrane.

Note: A common treatment for kidney disease is the use of a dialysis machine to filter toxic substances from the blood, a function that the kidneys normally perform.

dialysis 

Main Entry: di·al·y·sis
Pronunciation: dI-'al-&-s&s
Function: noun
Inflected Form: plural di·al·y·ses /-"sEz/
1 : the separation of substances in solution by means of their unequal diffusion through semipermeable membranes;especially : such a separation of colloids from soluble substances
2 : either of two medical procedures to remove wastes or toxins from the blood and adjust fluidand electrolyte imbalances by utilizing rates at which substances diffuse through a semipermeable membrane: a : the process of removing blood from an artery (as of a kidney patient),purifying it by dialysis, adding vital substances, and returning it to a vein called also hemodialysis b : a procedure performed in the peritoneal cavity in which the peritoneumacts as the semipermeable membrane called also peritoneal dialysis —di·a·lyt·ic /"dI-&-'lit-ik/ adjective

dialysis di·al·y·sis (dī-āl'ĭ-sĭs)
n. pl. di·al·y·ses (-sēz')

1. The separation of smaller molecules from larger molecules or of dissolved substances from colloidal particles in a solution by selective diffusion through a semipermeable membrane. Also called diffusion.

2. Hemodialysis.

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di'a·lyt'ic (-ə-lĭt'ĭk) adj.