leakproof

Adjective

 * 1) Resistant to leaks; hermetic, sound; as of a dry cell battery.
 * 2) * 1904, Institution of Mining and Metallurgy (Great Britain), Bulletin, Institution of Mining and Metallurgy (Great Britain) (1904), p. 22,
 * "In mining work difficult laying conditions, limited space, and movements of the ground, all combine to make the installation of a leakproof main with ordinary joints a very difficult matter."
 * 1) * 1929, Victor Wilfred Pagé, Modern Aviation Engines: design-construction-operation and repair, [&hellip;], Norman W. Henley Publishing Company (1929), p. 1589,
 * "Leakproof tanks shall be provided on all airplanes for service use unless the tanks are completely protected by armor."
 * 1) * 1967, Edward Locker Delmar-Morgan, Maintenance of Inboard Engines, Newnes (1967), p. 115,
 * "There are two subdivisions in the flashlight dry cell range, the ordinary cheap one and the better-quality leakproof cell."

Verb

 * 1)  To make resistant to leakage.