from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. That can be permeated or penetrated, especially by liquids or gases: permeable membranes; rock that is permeable by water.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Of or relating to substance, substrate, membrane or material that absorbs or allows the passage of fluids.
from the GNU version of the Collaborative International Dictionary of English
- adj. Capable of being permeated, or passed through; yielding passage; passable; penetrable; -- used especially of substances which allow the passage of fluids
from The Century Dictionary and Cyclopedia
- That may be permeated; capable of being passed through without rupture or displacement of parts: noting particularly substances that permit the passage of fluids.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. allowing fluids or gases to pass or diffuse through
From Latin permeabilis. (Wiktionary)