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v. leached, leach·ing, leach·es
1. To remove soluble or other constituents from by the action of a percolating liquid: heavy rains that leached the soil of minerals.
2. To remove from a substance by the action of a percolating liquid: acids in groundwater that leach calcium out of the bedrock.
3. To empty; drain: "a world leached of pleasure, voided of meaning" (Marilynne Robinson).
To be dissolved or passed out by a percolating liquid.
1. The act or process of leaching.
2. A porous, perforated, or sievelike vessel that holds material to be leached.
3. The substance through which a liquid is leached.

[From Middle English leche, leachate, from Old English *lece, muddy stream; akin to leccan, to moisten.]

leach′a·bil′i·ty n.
leach′a·ble adj.
leach′er n.


1. A process by which soluble constituents of soil are removed by liquid passing through it.
2. The loss of soluble nutrients from soil or compost.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.leaching - the process of leaching
natural action, natural process, action, activity - a process existing in or produced by nature (rather than by the intent of human beings); "the action of natural forces"; "volcanic activity"
References in periodicals archive ?
Perth, Australia, Feb 15, 2012 - (ABN Newswire) - Further leaching efficiency has been achieved for Resource Mining Corporation's (ASX:RMI) new green-tech nickel recovery process as latest test work continues to optimize the leaching parameters.
has obtained a patent for a process of making titanium dioxide particles, comprised of forming a slurry comprising particles and a phosphate-containing agent, the particles comprising titanium dioxide and alumina; milling the slurry to form a homogeneous dispersion comprised of milled particles; leaching the alumina off of the milled particles to form leached particles in a leached dispersion; treating the leached dispersion under conditions to react the leached alumina with the phosphate-containing agent to form aluminum phosphate and to coat the leached particles with the aluminum phosphate and form a slurry of coated particles.
A local source for sufficient low cost sulfuric acid has been identified which the Company is pursuing for the 50,000 tonnes per day leaching operation.
For copper amine-treated blocks, the greatest leaching resistance was found for copper monoethanolamine and copper polyimine treatments, which retained more than 80 percent copper when leached in water and more than 50 percent when leached with a citrate buffer.
Townsend performed an EPA test known as the toxicity characteristic leaching procedure (TCLP) on a variety of electronic items including computer CPUs S(central processing units), televisions, videocassette recorders, printers, cellular phones, remote controls, computer mice and keyboards, and smoke alarms.
report tests simulating a year's worth of CCA leaching by rain.
Headed by Akram Alfantazi, a specialist in hydrometallurgical technologies, the lab work will concentrate on developing new advances in hydrometallurgy, pressure leaching processes and other extraction processes for clients like Inco, Falconbridge and Noranda.
The one exception is china (imported as well as domestic), since it is fired at temperatures high enough to keep the lead from leaching out.
Wastes discharged from EDAP/TETS also exhibit low leaching characteristics when subjected to a water leaching test," added Streblow.
Preliminary recovery results are currently indicated to be between 70%-89% for the four deposits following 60 days of leaching.
The leaching program was comprised of bottle roll leaching tests on drill cuttings collected from the approximate 30,000 meter percussion drill program.
This paper presents results of a 1-year study that continuously monitored chromated copper arsenate (CCA) leaching from aboveground, naturally exposed 38-mm by 137.