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 ?
Reverse osmosis: Uses semipermeable membranes to eliminate many substances not removed by adsorption and is the only NSF-certified way to reduce nitrates and fluoride.
The concept that a thin film can be impervious and block liquid, while allowing outward moisture transmission is understood by anyone who has taken a biology class and learned about cellular semipermeable membranes.
Implantable just beneath the skin, the postage-stamp-size device has semipermeable membranes designed to protect the cells from attack by the immune system while still allowing the insulin produced by the cells to pass through the device to the body.
2014b), the heat and moisture are transferred between air and desiccant solution streams through microporous semipermeable membranes, which prevent the carryover problem.