Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “dialysis”


noun [U]     /daɪˈæl.ə.sɪs/ specialized
a process of separating substances from liquid by putting them through a thin piece of skin-like material , especially to make pure the blood of people whose kidneys are not working correctly : a dialysis machine kidney dialysis She is on (= being treated by) dialysis.Separating and dividing
(Definition of dialysis noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of dialysis

Browse related topics

You are looking at an entry to do with Separating and dividing, but you might be interested in these topics from the Cutting and joining topic area:

Word of the Day


a situation in which two people are friends

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More