Dictionary entry

Permeable

Webster's Dictionary 1913

Per″me‐a‐ble (?), a. [L. permeabilis: cf. F. perméable. 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.