illuviate

/ɪˈluːvieɪt/
verb
  1. To deposit or accumulate material (such as clay, minerals, or organic matter) in a lower layer of soil, carried there by water from an upper layer.
    • Farmers notice that nutrients sometimes illuviate deeper than plant roots can reach.
    • Rainwater can illuviate fine clay particles into the subsoil over many years.
    • In this forest, iron oxides illuviate downward, creating a reddish layer beneath the topsoil.
Antonyms
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