Also found in: Encyclopedia, Wikipedia.
Related to illuvium: illuvial
the material accumulated through soil that has been leached out of another layer of soil
Abused, Confused, & Misused Words by Mary Embree Copyright © 2007, 2013 by Mary Embree
(Geological Science) geology a material, which includes colloids and mineral salts, that is washed down from one layer of soil to a lower layer
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014