PERMEABLE
permeable
(adjective) allowing fluids or gases to pass or diffuse through; “permeable membranes”; “rock that is permeable by water”
Source: WordNet® 3.1
Etymology
Adjective
permeable (comparative more permeable, superlative most permeable)
that absorbs or allows the passage of fluids
Synonym: water-permeable
Antonym: impermeable
Source: Wiktionary
Per"me*a*ble, a. Etym: [L. permeabilis: cf. F. perméable. See
Permeate.]
Definition: 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.
Source: Webster’s Unabridged Dictionary 1913 Edition