[mass noun](Chemistry)the separation of particles in a liquid on the basis of differences in their ability to pass through a membrane (化)渗析,透析 ■(Medicine)the clinical purification of blood by this technique, as a substitute for the normal function of the kidney (医)(血液)透析
派生 dialytic adjective 语源
mid 19th cent.: via Latin from Greek dialusis, from dialuein 'split, separate', from dia 'apart' + luein 'set free'