The deposition in an underlying soil layer of colloids, soluble salts, and mineral particles leached out of an overlying soil layer.
The accumulation in an underlying soil layer of materials, as colloids or soluble salts, that have been leached out of an upper layer.
The deposition of colloids, soluble salts, and suspended mineral particles in a lower soil horizon through the process of eluviation (downward movement) from an upper soil horizon.
Origin of illuviation
- illuvial resulting from illuviation (in–) (-luvial relating to the action of flowing water) (as in alluvial) –ation
From American Heritage Dictionary of the English Language, 5th Edition