Definition of dialysis noun from the Oxford Advanced Learner's Dictionary

dialysis

noun
ˌdaɪˈæləsɪs
 
; ˌdaɪˈæləsɪs
 
[uncountable] (technical)
 
a process for separating substances from a liquid, especially for taking waste substances out of the blood of people with damaged kidneys
kidney/renal dialysisa dialysis machine
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