Definify.com
Webster 1913 Edition
Permeable
Per′me-a-ble
,Adj.
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.
Webster 1828 Edition
Permeable
PER'MEABLE
,Adj.
That may be passed through without rupture or displacement of its parts, as solid matter; applied particularly to substances that admit the passage of fluids. Thus cloth, leather, wood are permeable to water and oil; glass is permeable to light, but not to water.