Science / Geology / Leaching: The removal of soluble constituents from a rock or soil by moving ground water or hydrothermal fluids.
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Health / Dentistry / Bleaching: The technique of applying a chemical agent, usually hydrogen peroxide, to the teeth to whiten them. MORE
Entertainment / Literature / Semantic Bleaching: The process by which a word loses all its original meaning--a phenomenon quite common in toponyms and personal names. For instance, few English speakers think of 'Red People' when they hear the topony MORE
Business / Real Estate / Leach: Water that collects contaminants as it trickles through wastes, pesticides, or fertilizers. Leaching may occur in farming areas, feedlots, and landfills, and may result in hazardous substances enterin MORE