[ uhl-truh-fil-ter ]
/ ˌʌl trəˈfɪl tər /
Physical Chemistry. a filter for purifying sols, having a membrane with pores sufficiently small to prevent the passage of the suspended particles.
verb (used with object)
Physical Chemistry. to purify by means of an ultrafilter.
- ultrahigh frequency,
Origin of ultrafilter
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for ultrafiltration
Ultrafiltration membranes remove more than 99 percent of bacteria, molds, and spores from drinking water, and can be used at home.
/ (ˌʌltrəˈfɪltə) /
a filter with small pores used to separate very small particles from a suspension or colloidal solution
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
[ ŭl′trə-fĭl-trā′shən ]
The filtration of a colloidal substance through a semipermeable medium that allows only small molecules through.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.