leach /liːtʃ/ (
also leach out)
verb [intransitive and transitive][
Language: Old English;
Origin: leccan 'to make wet']
technical if a substance leaches or is leached from a larger mass such as the soil, it is removed from it by water passing through the larger mass:
The manufacturers say that there is no danger of the aluminium leaching into the water. [TahlilGaran] Dictionary of Contemporary English ▲