Wordnet 3.0
ADJECTIVE (1)
1.
allowing fluids or gases to pass or diffuse through;
- Example: "permeable membranes"- Example: "rock that is permeable by water"
The Collaborative International Dictionary of English v.0.48:
Permeable \Per"me*a*ble\, a. [L. permeabilis: cf. F.
perm['e]able. See Permeate.]
Capable of being permeated, or passed through; yielding
passage; passable; penetrable; -- used especially of
substances which allow the passage of fluids; as, wood is
permeable to oil; glass is permeable to light. --I. Taylor.
[1913 Webster]
WordNet (r) 3.0 (2006):
permeable
adj 1: allowing fluids or gases to pass or diffuse through;
"permeable membranes"; "rock that is permeable by water"
[ant: impermeable]