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adj. Partially permeable.

adj. Allowing passage of certain, especially small, molecules or ions but acting as a barrier to others. Used of biological and synthetic membranes.

adj. Describing something that is permeable to some things and not to others, as a cell membrane which allows some molecules through but blocks others substances.

Capable of permitting the passage of certain molecules and of impeding that of others; said of membranes or septa which are permeable to the molecules of a solvent such as water, but which prevent the diffusion of the molecules of the dissolved substance.

adj. (of a membrane) selectively permeable

"Needless to say, this has the most profound implications for the semipermeable soul."

permeable   

osmosis   

knotty-pine    chorioallantoic    permeable    tympanic    endothelial-cell    blood-brain    nanowire    microfiltration    plexalloy    full-power