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The deposition in an underlying soil layer of colloids, soluble salts, and mineral particles leached out of an overlying soil layer.
[illuvial, resulting from illuviation (in- + -luvial, relating to the action of flowing water, as in alluvial) + -ation.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Geological Science) the process by which a material (illuvium), which includes colloids and mineral salts, is washed down from one layer of soil to a lower layer
[C20: from Latin illuviēs dirt, mud, from il- + -luviēs, from lavere to wash]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
il•lu•vi•a•tion(ɪˌlu viˈeɪ ʃən)
the accumulation in one layer of soil of materials that have been leached out of another layer.
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