impermeable

(im-pér’mé-a-bl), a. [= F. im- perméable = Sp. impermeable = Pg. impermeavel = It. impermeabile; as in-3 + permeable.] Not permeable; not permitting the pa age of a fluid (especially water) through its substance. The sandy soil of the Landes of Gascony is malarious. At a depth of about three feet is an impermeable stratum, brown in color and strong in structure, known as the alios. Buck's Handbook of Med. Sciences, IV. 621. impermeablene (im-pér’mé-a-bl-nes), 2. The state of being impermeable.