[sem-ee-pur-mee-uh-buh l, sem-ahy-]
permeable only to certain small molecules: a semipermeable membrane.
Related formssem·i·per·me·a·bil·i·ty, noun
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
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Derived Formssemipermeability, noun
(esp of a cell membrane) selectively permeable
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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semipermeable in Medicine
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.