di·al·y·sis 
/daɪˈæləsəs/ noun
/daɪˈæləsəs/ noun [noncount] medical : the process of removing some of a person's blood, cleaning it, and then returning it to the person's body
▪ patients undergoing/receiving dialysis ▪ a dialysis machine ◊People usually receive dialysis when they have damaged kidneys.
▪ patients undergoing/receiving dialysis ▪ a dialysis machine ◊People usually receive dialysis when they have damaged kidneys.
