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Not pervious; not admitting of entrance or passage through; as, a substance impervious to water or air.
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Not susceptible of being passed through, or penetrated. Generally refers to the percolation of water.
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A solid that does not allow a liquid to pass through its surface; impenetrable.[xii] In this context it refers to the ability of rainwater to pass through unnatural surfaces around and near a building or the building's parking lot.
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Impenetrable. Completely resisting entrance of liquids.
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a material that water cannot pass through
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not allowing entrance or passage-example: a surface such as cement that does not allow water to pass through it Minnehaha: The Big Cover-Up
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Surfaces that will not allow things to pass through. Such as hard surfaces that do not allow water to pass through.
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not admitting of passage or capable of being affected; "a material impervious to water"; "someone impervious to argument"
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Description of a material that prevents passage of a fluid (i.e., asphalt surfaces)
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Impervious is the term given to soil which has become impenetrable because of foot traffic, construction etc.
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does not let liquid (water) pass through
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Unable to be penetrated, no way through.
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Impervious soil is soil in which the spacing of the soil particles is so close as to allow only very slow passage of water. For example, movement of water through a typical clay (an "impervious" soil) may be only 1/1,000,000 as fast as through a typical sand.
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not allowing water to pass through or penetrate it.
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A term denoting the resistance to penetration by water or plant roots.
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a bed or stratum of material through which water will not move under ordinary hydrostatic pressure
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a layer which does not allow water to pass through it.
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Said of a rock that does not permit the passage of fluids under the pressure conditions ordinarily found in the subsurface.
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is a term used to describe materials which resist the passage of water. - i.e. water will not dissolve in them, nor pass through them in any way.
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the quality or state of being impermeable; resisting penetration by water or plant roots. Impervious ground cover like concrete and asphalt affects quantity and quality of runoff.
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1. Incapable of having things passed through to penetrate. 2. Not being affected by something.
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Resistant to movement of water.
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Incapable of being penetrated.
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The degree of vitrification evidenced visually by complete resistance to dye penetration.
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not capable of being passed through, damaged, or disturbed. (Water is not able to flow through impervious surfaces, such as asphalt roads and concrete sidewalks.)
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A  surface  that  cannot  be  easily penetrated; for instance, rain does not readily penetrate asphalt or concrete surfaces.
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A material that does not allow another substance to pass through or penetrate it.
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An adjective describing a material through which water either cannot pass or through which it passes with great difficulty.
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Not allowing, or allowing only with great difficulty, the movement of water.
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Not easily penetrated by roots or water.
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