Definition of dialysis
plural dialyses
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\-ˌsēz\
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
: the process of removing blood from an artery (as of a patient affected with kidney failure), purifying it by dialysis, adding vital substances, and returning it to a vein — called also
hemodialysis
