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Related to eluviation: colluvial
The lateral or downward movement of dissolved or suspended material within soil when rainfall exceeds evaporation.
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.
(Physical Geography) the process by which material suspended in water is removed from one layer of soil to another by the action of rainfall or chemical decomposition
[C20: from eluvium]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
e•lu•vi•a•tion(ɪˌlu viˈeɪ ʃən)
the movement through the soil of materials brought into suspension or dissolved by the action of water.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.