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Of, relating to, or having undergone illuviation: illuvial organic matter.

[in- + -luvial (as in alluvial).]
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.


(ɪˈlu vi əl)

of or pertaining to illuviation.
[1920–25; il-1 + (al)luvial]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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References in periodicals archive ?
The humus cover of mineral agricultural soils consists of humus (A) and/or raw-humus (AT) horizons, but the subsoil includes the eluvial (E) and/or illuvial (B) horizons and is underlain by soil parent material or substratum.
Commonly, the soils in the area are rich by nutrients in humus horizon (A, Table 2), illuvial and elluvial horizons showing depletion trend.
The soil layer was selected in view of the highest need for the reclamation of the illuvial soil horizon.
Ultisols commonly feature an E (eluvial) horizon above an illuvial horizon with clay precipitation and have relative low base status.
The textural differentiation might be caused by an illuvial accumulation of clay, predominant pedogenetic formation of clay in the subsoil, destruction of clay in the surface horizon, selective surface erosion of clay, upward movement of coarser particles due to swelling and shrinking, biological activity, and a combination of two or more of these different processes [18].
From a typological perspective, it can be classified into brown eumesobasic soils, brown illuvial argillaceous soils (partially pseudogleyic), as well as pseudorendsina on more argillaceous marl, all of them very suitable for the vine, except for those whose hydro-physical features are neither favourable for vine growing, nor artificially improved for this purpose.
Dark-grey soils differ by more density of humus profile, reduction of eluvial thickness and less illuvial profile part.
To distinguish erosion classes, the illuvial horizon B was separated in three parts (Bt1, Bt2, and BC) that were easily recognized in the field by the identification of the B subhorizon located below the plowed layer.
Soil2 was illuvial humus podzol (Placic, Rustic, Albic, Folic, Stagnic Podzols) with Myrtilloso-polytrichosa forest type (forest type classification according to Buss (1997), and soil types according to Latvian and FAO WRB (2006) soil classifications).
Pixie Lott is the face of the Illuvial Collection, available exclusively at The Carphone Warehouse.