Definitions for ultrafiltration-ˈtreɪ ʃən
Random House Webster's College Dictionary
ul•tra•fil•terˌʌl trəˈfɪl tər(n.)
a filter for purifying sols, having a membrane with pores sufficiently small to prevent the passage of the suspended particles.
(v.t.)to purify by means of an ultrafilter.
Origin of ultrafilter:
Filtration through a semipermeable membrane which only allows small molecules through.
U.S. National Library of Medicine
The separation of particles from a suspension by passage through a filter with very fine pores. In ultrafiltration the separation is accomplished by convective transport; in DIALYSIS separation relies instead upon differential diffusion. Ultrafiltration occurs naturally and is a laboratory procedure. Artificial ultrafiltration of the blood is referred to as HEMOFILTRATION or HEMODIAFILTRATION (if combined with HEMODIALYSIS).
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