Leach Funeral Home Obituaries. Leach is used to describe the process of a liquid absorbing substanc

Leach is used to describe the process of a liquid absorbing substances from a material it passes through, frequently in a scientific or environmental context. The chemical eventually leaches away from the soil. Learn more. All Free. to lose or cause to lose soluble substances by the action of a percolating liquid When something leaches or is leached from a substance, it is slowly removed from it, usually by the action of water. The calcium, potassium, and magnesium ions are leached or washed out of the top soil into lower inaccessible subsoil. LEACH definition: to dissolve out soluble constituents from (ashes, soil, etc. leach (liːtʃ) vb 1. to lose or cause to lose soluble substances by the action of a percolating liquid Definition of leach verb in Oxford Advanced Learner's Dictionary. How to use leach in a sentence.