semipermeable adjective. [sɛmɪ'pǝ:mɪǝb(ǝ)l] L19.
[from SEMI- + PERMEABLE adjective.]
Of a membrane or other structure: selectively permeable to certain atoms and molecules; spec. permeable to molecules of water but not to those of any dissolved substance.

■ semipermea'bility noun the property or condition of being semipermeable E20.

[TahlilGaran] English Dictionary ▲