As water moves through soils or landfills, chemicals in the soil may dissolve in the water thereby contaminating the groundwater. This is called leaching.

Leaching is the process where soluble materials (including nutrients and salts) in the soil are washed down the soil profile by water.

the removal of minerals in solution from soils when water moves down through the soil and drains away.

the washing out of soluble substances from soil or rock, by water percolating through.

The dissolving of minerals and other elements in soil or rocks by the downward movement of water.

The removal of materials in solution from soil, rock, or waste. Separation or dissolving out of soluble constituents from a porous medium by percolation of water. Dept. of the Interior, U.S. Geologica [..]

1. Removing salts, ions, or other soluble substances from soil by abundant irrigation combined with drainage. 2. Movement of soluble materials downward with percolating water.

The downward movement of water and nutrients from the soil surface to the water table due to gravity.

The process whereby a substance, such as fertilizer, dissolves and is carried away by rain water.  leader

Movement of water and soluble nutrients down through the soil profile.

the flushing or percolation of chemicals, minerals, or other substances through soil. Pesticides, fertilizers, poisons from mines or feedlots, and wastes from industrial plants sometimes leach into groundwater. Leaching also refers to washing the salt from soil to increase its fertility.

The process by which soluble materials in the soil, such as salts, nutrients, pesticide chemicals or contaminants, are washed into a lower layer of soil or are dissolved and carried away by water.

the process by which soluble materials in the soil, such as salts, nutrients, pesticide chemicals or contaminants, are washed into a lower layer of soil or are dissolved and carried away by water.

A process in which metal is extracted from mined ore by means of adding a soluble substance. Commonly used in gold mining.

The process by which soluble constituents are dissolved and filtered through the soil by a percolating fluid.

A process of soil nutrient removal through the erosive movement and chemical action of water. Legume:

A process where nutrients are remove from soil by the erosive movement and chemical action of water.

removal of substances that can be dissolved from rock, ore, or layers of soil due to the passing of water. legend -

The removal of soil elements or applied chemicals by water movement through the soil.

Removal of soluble materials from one zone in soil to another via water movement in the profile.

The loss of soluble material from decaying organisms

The removal of elements from a soil by dissolution in water moving downward in the ground.

To dissolve out by the action of a percolating liquid.

The process by which soluble substances are dissolved and transported down through the soil by recharge.

Downward movement of a soluble material through the soil as a result of water movement.

The separation, selective removal, or dissolving-out of soluble constituents from a rock or orebody by the natural action of percolating water, or the extraction of soluble metals or salts from an ore [..]

The downward movement of material, such as chemicals and minerals, in the soil profile by percolating water.

The process by which soluble constituents are dissolved and filtered through the soil by a percolating fluid. Also see Leachate. (EPA Glossary)

The process by which soluble constituents are dissolved and filtered through the soil by a percolating fluid.

The process by which soluble constituents are dissolved and filtered through the soil by a percolating fluid. (See: leachate.)

The process by which soluble constituents are dissolved and filtered through the soil by a percolating fluid. (See: leachate.)

is the removal of dissolved chemicals from soil by the movement of a liquid (like water).  

Removal of dissolvable matter from its mixture with an insoluble solid; major part occurring during mashing

 – The process by which soluble matter is dissolved in water and carried downward and radially through the soil.

Downward movement in soil of soluble nutrients or other ions past the rootzone. Removal of accumulated soil salts resulting from irrigation with a saline water source.

Removal of soluble substances and nutrients from the upper layers of soil by the downward flow of water.

The process by which soluble materials in the soil, such as salts, nutrients, pesticide chemicals or contaminants, are washed into a lower layer of soil or are dissolved and carried away by water.

The loss or dissolving out of soluble substances from a rock by percolation of water or other fluid.

Slow passage of a solvent through a layer of porous or crushed material in order to extract valuable components. For example, gold can be extracted by heap leaching a porous ore or pulverized tailings.

The separation, selective removal, or dissolving-out of soluble constituents from a rock or orebody by the natural action of percolating water, or the extraction of soluble metals or salts from an ore by means of slowly percolating solutions.

A chemical process for the extraction of valuable minerals from ore; also, a natural process by which ground waters dissolve minerals, thus leaving the rock with a smaller proportion of some of the minerals than it contained originally. Lens

Selective dissolution of any or a number of components of the processed solid material in organic solvents or water solutions of inorganic substances.

Leaching is the process by which soluble matter is removed from soil or rock by the action of percolating water.

Movement of water and soluble nutrients down through the soil profile.

The process of drawing out excess liquid through a porous substance.

extraction or flushing out of dissolved or suspended materials from the soil, solid waste, or another medium by water or other liquids as they percolate down through the medium to groundwater.

A process in the soil that is similar to brewing tea or coffee. Water moves through the soil removing soluble nutrients and minerals. In areas of high rainfall, rain water leaches good as well as bad [..]

the removal of chemical constituents from rocks and soil by water.

The process of removing valuable minerals from a solution by percolating waters. Often used to extract soluble metallic compounds from an ore by selectively dissolving it into a suitable solvent.

the movement of chemical in the upper layers of soil into lower layers or into groundwater by being dissolved in water.

The removal of the soluble constìtuents of a rock, soil or ore (that which is leached being known as the leachate) by the action of percolating waters. Leaching is a major process in the devolopment [..]

When solvents are applied to a paint film, solvent soluble compounds are removed and the film becomes more brittle.

Washing out of a soluble constituent of a material.

the washing out of nutrients (especially nitrates) from the soil root zone.

The washing out of material from the soil, both in solution and in suspension. See also

The movement of dissolved substances through the soil with percolating rainwater.

Leaching is the loss or extraction of certain materials from a carrier into a liquid (usually, but not always a solvent). and may refer to: Leaching (agriculture), the loss of water-soluble plant nut [..]

In agriculture, leaching is the loss of water-soluble plant nutrients from the soil, due to rain and irrigation. Soil structure, crop planting, type and application rates of fertilizers, and other fac [..]

Leaching is the process of extracting substances from a solid by dissolving them in a liquid, either naturally or through an industrial process. In the chemical processing industry, leaching has a var [..]

Leaching is a process where ore is soluble and impurities are insoluble, widely used extractive metallurgy technique which converts metals into soluble salts in aqueous media. Compared to pyrometallu [..]

In pedology, leaching is the loss of mineral and organic solutes due to very heavy rainfall, high temperature and percolation. It is a mechanism of soil formation distinct from the soil forming proces [..]

When rain shifts the soil in such a way that nutrients for plants are lost

The movement of salts, nutrients, and other materials in water through the soil profile. Leaching accounts for nutrient losses but can also be beneficial in ridding a soil of excess salts. Legume

leaching occurs when rainfall or irrigation water flushes substances and nutrients through soil. Leaching is primarily performed to remove the buildup of harmful nutrients, including salt. After leaching, it's important to fertilize your lawn with nutrients that promote growth, such as nitrogen. This can be done by applying high quality lawn f [..]

The downward movement of water and nutrients from the soil surface to the water table due to gravity.

The removal or loss of excess salts or nutrients from soil. The soil around over fertilized plants can be leached clean by large quantities of fresh water. Areas of extremely high rainfall sometimes lose the nutrients from the soil by natural leaching. Leader

Washing out of substances by the flow of water.

Deep percolation or washing of nutrients through the soil to a depth beyond the root zone of plants. Leaf Curl: