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| n. An underground bed or layer of earth, gravel, or porous stone that yields water. |
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Artesian Formation [image] |
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Evapotranspiration [image] |
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| 1. | the process of transferring moisture from the earth to the atmosphere by evaporation of water and transpiration from plants. |
| 2. | Also called flyoff, water loss. the total volume transferred by this process |
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| 1.A natural hot spring that intermittently ejects a column of water and steam into the air. |
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–noun | the water on or surrounding the surface of the globe, including the water of the oceans and the water in the atmosphere |
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| 1. | not permeable; impassable. |
| 2. | Chemistry, Geology. (of porous substances, rocks, etc.) not permitting the passage of a fluid through the pores, interstices, etc. |
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| 1. | the property or state of being permeable. |
| 2. | Also called magnetic permeability. Electricity. a measure of the change in magnetic induction produced when a magnetic material replaces air, expressed as a coefficient or a set of coefficients that multiply the components of magnetic intensity to give the components of magnetic induction. |
| 3. | Geology. the capability of a porous rock or sediment to permit the flow of fluids through its pore spaces. |
| 4. | Aeronautics. the rate at which gas is lost through the envelope of an aerostat, usually expressed as the number of liters thus diffused in one day through a square meter. |
| 5. | Nautical. the capacity of a space in a vessel to absorb water, measured with reference to its temporary or permanent contents and expressed as a percentage of the total volume of the space. |
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| 1. | the state or quality of being porous. |
| 2. | Geology, Engineering. the ratio, expressed as a percentage, of the volume of the pores or interstices of a substance, as a rock or rock stratum, to the total volume of the mass. |
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–verb (used with object) | 1. | to charge again with electricity. |
| 2. | Informal. to refresh or restore; revitalize. |
–verb (used without object) | 3. | to make a new charge, esp. to attack again. |
| 4. | Informal. to revive or restore energy, stamina, enthusiasm, etc. |
–noun | 5. | an act or instance of recharging. |
| 6. | Geology. the processes by which ground water is absorbed into the zone of saturation. |
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| 1. | something that remains above what is used or needed. |
| 2. | an amount, quantity, etc., greater than needed. |
| 3. | agricultural produce or a quantity of food grown by a nation or area in excess of its needs, esp. such a quantity of food purchased and stored by a governmental program of guaranteeing farmers a specific price for certain crops. |
| 4. | Accounting. | a. | the excess of assets over liabilities accumulated throughout the existence of a business, excepting assets against which stock certificates have been issued; excess of net worth over capital-stock value. |
| b. | an amount of assets in excess of what is requisite to meet liabilities. |
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| 1. | (formerly) a leather bag suspended at each end of a pole or yoke and used for carrying water. |
| 2. | Also, water budget. Heraldry. a representation of a pair of these joined by a yoke, used as a charge. |
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| The Earth's water is always in movement, and the water cycle, also known as the hydrologic cycle, describes the continuous movement of water on, above, and below the surface of the Earth |
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The water table is the level at which the ground water pressure is equal to atmospheric pressure. It may be conveniently visualized as the 'surface' of the ground water in a given vicinity. It usually coincides with the phreatic surface, but can be many feet above it. As water infiltrates through pore spaces in the soil, it first passes through the zone of aeration, where the soil is unsaturated. At increasing depths water fills in more spaces, until the zone of saturation is reached. The relatively horizontal plane atop this zone constitutes the water table. |
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