- Chem. any process in which the smaller dissolved molecules in a solution separate from the larger molecules by diffusing through a semipermeable membrane
- Med. any of various procedures, usually performed on a regular basis on patients who have impaired kidney function, in which chemical dialysis is used to remove toxic waste, chemicals, etc. from the blood
Origin of dialysisClassical Latin ; from Gr, separation, dissolution ; from dialyein, to separate, dissolve ; from dia-, apart + lyein, to loose: see lose
- The separation of smaller molecules from larger molecules or of dissolved substances from colloidal particles in a solution by selective diffusion through a semipermeable membrane.
Origin of dialysisGreek dialusis, separating, dissolution, from dialūein, to break up, dissolve : dia-, apart; see dia– + lūein, to loosen; see leu- in Indo-European roots.
Dated in the late 16th Century CE; from Ancient Greek διά (diá, “inter” “through”) and λύειν (lýein, “loosen”).