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leach

To drain away from a substance or a soil by the percolation of a solvent, typically water, removing soluble minerals or chemicals. / To seep or drain away from a solid material through the action of a liquid.
Transitive VerbIntransitive Verb
past: leachedpp: leacheding: leaching

This term describes a specific chemical or geological process where a liquid solvent removes soluble materials from a solid. It is most frequently encountered in environmental science, agriculture, and chemistry to describe the loss of nutrients from soil or the contamination of water sources by pollutants.

In a technical context, it differs from "leak" in that leaching involves the dissolution of substances into a liquid, whereas leaking refers to the accidental escape of a liquid or gas through a hole or crack. It is typically used with a neutral or negative connotation, often implying a loss of value or the introduction of toxins.

Meanings

Transitive Verb
[~ something from something]

To drain away from a substance or a soil by the percolation of a solvent, typically water, removing soluble minerals or chemicals.

The heavy rains leach nutrients from the soil, leaving it infertile.

Intransitive Verb

To seep or drain away from a solid material through the action of a liquid.

Chemicals can leach into the groundwater if the landfill is not properly lined.

Examples

Heavy rains can leach nutrients from the soil.

Heavy rains can leach nutrients from the soil.

The chemicals leach into the groundwater over time.

The chemicals leach into the groundwater over time.

We need to leach the salt from the earth before planting.

We need to leach the salt from the earth before planting.

Does the plastic in this bottle leach chemicals into the water?

Does the plastic in this bottle leach chemicals into the water?

Health

The minerals leach out of the rock during the process.

The minerals leach out of the rock during the process.

Trivia

I wonder if these dyes leach when the fabric gets wet.

I wonder if these dyes leach when the fabric gets wet.

The landfill was designed to prevent toxins from leaching into the soil.

The landfill was designed to prevent toxins from leaching into the soil.

Business

Water will leach the soluble salts from the upper layers of the soil.

Water will leach the soluble salts from the upper layers of the soil.

The pesticide leached through the sand and reached the aquifer.

The pesticide leached through the sand and reached the aquifer.

Phrasal Verbs

leach out

to be drained or washed out of a substance

The minerals leach out of the rock over thousands of years.

Related Words

drainfilterextractseeppercolatedissolveabsorbaccumulateretainconcentratesolventsolutepermeabilityporosityfiltrationosmosisdiffusionmineralnutrientsoilgroundwateraquifersedimenterosionweatheringprecipitationraindrainagepercolationseepageeffluentleachatecontaminationpollutiontoxinheavy metalcationanionionsaturationcapillary actionpermeatedissolutionevaporationcondensationchemistrygeologyhydrologypedologyagriculturefertilizernitratephosphatepotassiumcalciummagnesiumlimestonesandstoneshaleclaysiltloambedrockporemembranewashoutelutioneluentextractionpurificationconcentrationdilution
Última actualización: May 2026Reportar un error