The movement of soil material from one horizon to another in the soil profile. Generally, material is removed from an upper horizon and deposited in a lower horizon.

The deposit of materials carried by water from one horizon into another within the soil (such as clay or nutrients in solution).

Deposition of humus, chemical substances, and fine mineral particles in the lower layers of a soil from upper layers because of the downward movement of water through the soil profile. Compare with eluviation.

( Ped.). The process of deposition of soil material removed from one horizon to another horizon of the soil; usually from an upper horizon to a lower horizon in the profile. ( SSSA).

The process of depositing soil material removed from one horizon in the soil to an- other, usually from an upper to a lower horizon in the soil profile. Illuviated substances include silicate clay, hydrous oxides of iron and aluminum, and organic matter.

The process of deposition (in-washing) of soil materials either from suspension or solution, usually from an upper horizon into a lower soil horizon but also from a lateral source (Allaby, 1991).

The movement of soil material from one horizon to another in the soil profile. Generally material is lost from an overlying horizon to an underlying one.

The process of accumulation in a lower soil horizon of material derived in soluble or suspended form from an upper (eluvial) horizon.

the additon of underlying levels of soil of salts, colloids, and small mineral particles moving downward by chemical or mechanical processes, most common in humid regions. [AHDOS

The precess of movement of material from one horizon and its deposition in another horizon of the same soil, usually from an upper horizon to a middle or lower horizon in the pedounit. Movement can also take place laterally.