Dictionary

semipermeable

semipermeable

adjective semi·per·me·able \-ˈpər-mē-ə-bəl\

Definition of SEMIPERMEABLE

:  partially but not freely or wholly permeable; specifically :  permeable to some usually small molecules but not to other usually larger particles <a semipermeable membrane>
semi·per·me·abil·i·ty \-ˌpər-mē-ə-ˈbi-lə-tē\ noun

First Known Use of SEMIPERMEABLE

1888

semipermeable

adjective semi·per·me·able \ˌsem-i-ˈpər-mē-ə-bəl, ˌsem-ˌī-\   (Medical Dictionary)

Medical Definition of SEMIPERMEABLE

:  partially but not freely or wholly permeable; specifically :  permeable to some usually small molecules but not to other usually larger particles <a semipermeable membrane>
semi·per·me·abil·i·ty \-ˌpər-mē-ə-ˈbil-ət-ē\ noun, plural semi·per·me·abil·i·ties

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