dialysis

noun4

1. •
   A method of separating molecules or particles of different sizes by differential diffusion through a semipermeable membrane.
2. •
   The use of this method for the removal of waste products from the blood in the case of kidney failure: hemodialysis or peritoneal dialysis.

   • An artificial kidney these days still means a refrigerator-sized dialysis machine. Such devices mimic the way real kidneys cleanse blood and eject impurities and surplus water as urine. — 2013
3. •
   (rhetoric) The spelling out of alternatives, or presenting of either-or arguments that lead to a conclusion.
4. •
   (rhetoric) asyndeton.