semipermeable membrane

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semipermeable membrane

A substance which allows solvent molecules to pass through but not solute molecules.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.semipermeable membrane - a membrane (as a cell membrane) that allows some molecules to pass through but not others
cell membrane, cytomembrane, plasma membrane - a thin membrane (a double layer of lipids) enclosing the cytoplasm of a cell; proteins in the membrane control passage of ions (like sodium or potassium or calcium) in and out of the cell; "all cells have a cell membrane"
tissue layer, membrane - a pliable sheet of tissue that covers or lines or connects the organs or cells of animals or plants
References in periodicals archive ?
The difference in the concentration of each ion across a differentially permeable membrane creates the driving force for diffusion across the membrane.
As a consequence of a membrane capacitance, and the diffusion of ions across a differentially permeable membrane, an equilibrium potential (or Nernst potential) is established (Nernst, 1888, 1889).

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