Definition
noun
A membrane that is selectively permeable, i.e. being permeable to only certain molecules and not to all molecules.
Supplement
An example of such membrane is the cell membrane wherein it allows passage of only certain types of molecules by diffusion and occasionally by facilitated diffusion.
Synonyms:
- semipermeable membrane
- selectively-permeable membrane
- differentially-permeable membrane
See also: cell membrane
