adj.
Pronunciation: - ' p ə r-m ē - ə -b ə l
Function: adjective
Date: 1888
: 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 \ - ˌ p ə r-m ē - ə - ' bi-l ə -t ē \ noun