semipermeable membrane

synonyms: differentially permeable membrane, selectively membrane
https://doi.org/10.1351/goldbook.16083
Membrane that will preferentially allow certain molecules or ions to pass through it while preventing the passage of others.
Source:
PAC, 2007, 79, 1153. (Glossary of terms used in toxicology, 2nd edition (IUPAC Recommendations 2007)) on page 1307 [Terms] [Paper]