semipermeable

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semipermeable

 [sem″e-per´me-ah-bl]
permitting passage only of certain molecules.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

sem·i·per·me·a·ble

(sem'ē-per'mē-ă-bĕl),
Freely permeable to water (or other solvent) but relatively impermeable to solutes. Depending on the context, it has been used to imply impermeability to all solutes except very small uncharged molecules (for example, a cell membrane), or merely impermeability to very large molecules such as proteins (for example, a capillary membrane).
Farlex Partner Medical Dictionary © Farlex 2012

semipermeable

(sĕm′ē-pûr′mē-ə-bəl, sĕm′ī-)
adj.
1. Partially permeable.
2. Allowing passage of certain, especially small, molecules or ions but acting as a barrier to others. Used of biological and synthetic membranes.

sem′i·per′me·a·bil′i·ty n.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

sem·i·per·me·a·ble

(sem'ē-pĕr'mē-ă-bĕl)
Freely permeable to water (or other solvent) but relatively impermeable to solutes.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

semipermeable

Able to allow the passage of molecules below a certain size and to retain those above this size. Much of PHYSIOLOGY depends on the semipermeability of body membranes.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

sem·i·per·me·a·ble

(sem'ē-pĕr'mē-ă-bĕl)
Freely permeable to water (or other solvent) but relatively impermeable to solutes.
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
It has been proposed that heat injury affects membranes, which results in losses in semipermeability due to increased fluidity of lipids or denaturation of proteins (Levitt, 1972).