he·mo·di·al·y·sis 
(hē′mō-dī-ălĭ-sĭs)
(hē′mō-dī-ălĭ-sĭs)n. pl. he·mo·di·al·y·ses (-sēz′)
A dialysis technique in which blood is removed from the body, filtered through a dialyzer that removes waste products and excess fluid, and then returned to the body.