from The American Heritage® Dictionary of the English Language, 4th Edition
- 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.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- 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.
from The Century Dictionary and Cyclopedia
- 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.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. (of a membrane) selectively permeable
Sorry, no etymologies found.
Needless to say, this has the most profound implications for the semipermeable soul.
The matter of what exactly cures us is not unrelated to other themes that have run through this book, in particular that of the semipermeable soul and “who shall I say is calling?”
Is not our modern way of seeing, or not seeing, very much tied to the sealed-off self that we now construe, a somewhat different organ from the semipermeable soul it has replaced?
People who believe in God generally believe whether they know it or not in precisely such a semipermeable membrane separating an outside Deity from an inside “me.”
Whatever its origins and past history—in fact, precisely because of what we know of its origins—does not the semipermeable soul now look like a mistake, a misstep on the path to the true understanding of ourselves?
It works the same with your tap water, forcing liquid through a semipermeable membrane that strips out a broader range of contaminants than a carbon filter alone.
Now, to find a semipermeable membrane suitable to the scale of the task.
The light twinkles between the stones during the day and, somehow, keeps the building naturally cool through this semipermeable membrane.
Reverse osmosis uses extremely high pressure to force water through a semipermeable membrane and separate out salts.
Our planter boxes are made from cedar planking and lined with weed cloth, a semipermeable plastic fabric, to allow drainage.