[sem-ee-pur-mee-uh-buh l, sem-ahy-]
- permeable only to certain small molecules: a semipermeable membrane.
Origin of semipermeable
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for semipermeable
Water has to be pushed through a semipermeable membrane that blocks the salt and other impurities from going through.Sun+Water= High Tech Caribbean Luxury At The Cusinart Resort
The Daily Beast
June 11, 2014
Similarly the diffusion of sols through "semipermeable" membranes is affected by lyotrope influence.Animal Proteins
Hugh Garner Bennett
- (esp of a cell membrane) selectively permeable
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
- Partially permeable.
- Allowing passage of certain, especially small, molecules or ions but acting as a barrier to others. Used of biological and synthetic membranes.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.