| 单词 | impermeable |
| 释义 | impermeable (once / 29184 pages) adj If you have a waterproof raincoat, you could say that your coat is impermeable to the rain. Something that is impermeable does not allow water or liquid to pass through it. Made up of the prefix im-, meaning “not,” and the adjective permeable, meaning “allowing to pass through,” impermeable is used in much the same way as impervious or impenetrable. However, more so than these words, impermeable is especially associated with liquids and is often used in a scientific or technical context. Some gadgets, like waterproof watches and underwater cameras, are designed to be impermeable. WORD FAMILYimpermeable: impermeability, impermeableness, impermeably+/permeability: permeabilities/permeable: impermeable, permeability, permeableness, semipermeable/permeate: permeable, permeated, permeates, permeating, permeation, permeative/permeating: permeatingly/permeation: permeations USAGE EXAMPLESTypically, fracking involves injections into impermeable rock layers that inhibit the spread of fluid and increase pore pressure. Science Magazine(Nov 18, 2016) No wall is impermeable, and more Mexicans have left the United States than entered since the Great Recession of 2008. Washington Post(Nov 13, 2016) Fossilized bones have been subject to mineralization — the organic material is literally replaced with rock — which makes them impermeable to most X-rays. Washington Post(Sep 07, 2016) adj preventing especially liquids to pass or diffuse through impermeable stone an impermeable layer of scum a coat impermeable to rain Syn|Ant tight of such close construction as to be impermeable retentivehaving the power, capacity, or quality of retaining water water-repellent, water-resistanthindering the penetration of water imperviable, imperviousnot admitting of passage or capable of being affected permeable allowing fluids or gases to pass or diffuse through leakypermitting the unwanted passage of fluids or gases porousable to absorb fluids semipermeable(of a membrane) selectively permeable perviousadmitting of passage or entrance |
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