loessal

loess

[loh-es, les, luhs]
noun
a loamy deposit formed by wind, usually yellowish and calcareous, common in the Mississippi Valley and in Europe and Asia.

Origin:
1825–35; < German Löss < Swiss German lösch loose, slack (sch taken as a dial. equivalent of German s), akin to German lose loose

loessial, loessal, adjective
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
loess (ˈləʊɪs, German lœs)
 
n
a light-coloured fine-grained accumulation of clay and silt particles that have been deposited by the wind
 
[C19: from German Löss, from Swiss German dialect lösch loose]
 
loessial
 
adj
 
lo'essal
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

loess
1833 (in Lyell), "unstratified deposit of loam," coined 1823 by K.C. von Leonhard from Ger. Löss "yellowish-gray soil," from Swiss Ger. lösch (adj.) "loose" (cf. Ger. los; see loose).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
loess   (lō'əs, lěs, lŭs)  Pronunciation Key 
A very fine grained silt or clay, thought to have formed as the result of grinding by glaciers and to have been deposited by the wind. Most loess is believed to have originated during the Pleistocene Epoch from areas of land covered by glaciers and from desert surfaces.
The American Heritage® Science Dictionary
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