leach in

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leach in

To enter (some substance or material) through percolation. Rising seas have allowed high concentrations of salt to leach in across these coastal farmlands. After the spill, acids and other toxins began leaching in on the cliffsides.
See also: leach

leach in (to something)

[for a substance] to seep or penetrate into something. The salt leached into the soil and ruined it. A tremendous amount of salt leached in.
See also: leach
References in periodicals archive ?
Recently, successful operation of heap leaches in northern Ontario and at high elevation sites in the western United States indicates that--with appropriate design for climate and hydrology--the technique is available for use when suitable ore reserves are identified in areas which are subject to extended periods of subfreezing ambient temperature.