adj. Of or relating to substance, substrate, membrane or material that absorbs or allows the passage of fluids.
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
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.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. allowing fluids or gases to pass or diffuse through
Word Usage
"They are all permeable, and the reason they're permeable is that nobody likes someone who talks shit about other people."