eluviation

/IH0 L UW1 V IY0 EY1 SH AH0 N/
noun
  1. 1

    (soil science, countable) The sideways or downward movement of dissolved or suspended material within soil caused by rainfall

  2. 2

    (geology, uncountable) Creation of geological deposits (eluvial deposits) by in situ weathering or weathering plus gravitational movement or accumulation.