Dictionary.com

illuviation

[ ih-loo-vee-ey-shuhn ]
/ ɪˌlu viˈeɪ ʃən /
Save This Word!

noun

the accumulation in one layer of soil of materials that have been leached out of another layer.

QUIZZES

THINK YOU’VE GOT A HANDLE ON THIS US STATE NICKNAME QUIZ?

Did you ever collect all those state quarters? Put them to good use on this quiz about curious state monikers and the facts around them.
Question 1 of 8
Mississippi’s nickname comes from the magnificent trees that grow there. What is it?

Origin of illuviation

First recorded in 1925–30; illuvi(al) + -ation
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for illuviation

illuviation
/ (ɪˌluːvɪˈeɪʃən) /

noun

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

Derived forms of illuviation

illuvial, adjective

Word Origin for illuviation

C20: from Latin illuviēs dirt, mud, from il- + -luviēs, from lavere to wash
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for illuviation

illuviation
[ ĭ-lōō′vē-āshən ]

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.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
See Today's Synonym