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The contact lenses are gas-permeable, so the eye can breath.
  allowing fluids or gases to pass through
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permeable impermeable
Strongly Associated with:   permeate
Standard Prefix:  Note that "impermeable" is frequently used to indicate that something is not permeable. The prefix, "im" often means "not"; as "impossible" is "not possible" or "immature" is "not mature".

Similarly, the prefix "semi" typically means "half". Hence, the word "semipermeable" means partially permeable; specifically, permeable to some molecules, but not to others.
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  • The contact lenses are gas-permeable, so the eye can breath.
  • The geologist identified the rock as permeable by water.
  • They are using permeable materials for paving to achieve a stormwater management system close to natural conditions.
  • A semi-permeable membrane works like a strainer. A strainer could be used to capture pasta and let water through. Different kinds of semi-permeable membranes can capture or permit pass-through of various substances at the molecular level.

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  • On the surface he’s impermeable, except a scar above his left brow tells the truth . . . he’s human.
    Simone Elkeles  --  Perfect Chemistry
  • They had been stripped—before or afterwards—only of those things that the local people needed: sheets of tin, lengths of pipe, bathtubs and sinks and lavatory bowls (impermeable vessels, useful for soaking cassava in).
    V.S. Naipaul  --  A Bend in the River
  • Although he had told me in large (though generally impenetrable) detail about the technical nature of his research (enzymes, ion transference, permeable membranes, etc., also the fetus of that miserable rabbit), he had never divulged to me—nor had I out of reticence asked—anything concerning the ultimate justification for this complex and, beyond doubt, profoundly challenging biological enterprise.
    William Styron  --  Sophie’s Choice
  • They tie nkisis of leaves around their wrists and declare themselves impermeable to bullets, immune to death.
    Barbara Kingsolver  --  The Poisonwood Bible
  • Some of the eggs are permeable to skin oils.
    Michael Crichton  --  Jurassic Park
  • The camerlegno’s tone was impermeable.
    Dan Brown  --  Angels & Demons

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  • The substance of the wall seemed as permeable and yielding as light.
    Jack London  --  White Fang
  • But it was hidden by a sheath as impermeable as Nicole’s when they met and went together to a series of fittings.
    F. Scott Fitzgerald  --  Tender is the Night
  • Since everyone in this house was both perfect and impermeable, I could only assume that she’d bought most of these things with me in mind.
    Stephenie Meyer  --  Eclipse
  • They are solid and impermeable.
    Jostein Gaarder  --  Sophie’s World
  • She was faultless, in her impermeable tight pink-and-white casing.
    Susanna Kaysen  --  Girl Interrupted
  • Specially treated to make it impermeable to gas.
    Kenneth Oppel  --  Airborn
  • In Burundi, social divisions had long been more complex and the barriers among them more permeable than in Rwanda.
    Tracy Kidder  --  Strength in What Remains
  • Most of my Arizona clothes were too permeable for Washington.
    Stephenie Meyer  --  Twilight
  • He was lonely still, but it was only a mist, a weather front that passed through him when he was alone, a feeling of having turned too permeable.
    Gish Jen  --  Typical American
  • We do not yet see that virtue is Height, and that a man or a company of men, plastic and permeable to principles, by the law of nature must overpower and ride all cities, nations, kings, rich men, poets, who are not.
    Ralph Waldo Emerson  --  Selected Essays
  • While Hank stood on the crumbling bank, giving an impassioned speech about the watershed protection group that he’d helped to organize, telling me about holding ponds, landscaped greenways, and the virtues of permeable parking lots covered in gravel, I lost track of his words.
    Eric Schlosser  --  Fast Food Nation
  • The material of my own trousers and shirt was too porous, but Kate’s pants were silky, just like the ship’s impermeable gas cells.
    Kenneth Oppel  --  Airborn
  • When drawing in diffuse light, give boundaries a permeable tonal hedge by using patches of cross-hatching.
  • The substance of the wall seemed as permeable and yielding as light.
    London, Jack  --  White Fang
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Associated words [difficulty]:   permeable [6] , permeate [2]
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Most commonly used in these subjects:   Engineering, Nature & Ecology, Science
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