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lithosol

[lith-uh-sawl, -sol]
noun
  1. a group of shallow soils lacking well-defined horizons, especially an entisol consisting of partially weathered rock fragments, usually on steep slopes.
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Origin of lithosol

First recorded in 1935–40; litho- + -sol
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for lithosols'

lithosol

noun
  1. mainly US a type of azonal soil consisting chiefly of unweathered or partly weathered rock fragments, usually found on steep slopes
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Word Origin for lithosol

C20: from litho- + Latin solum soil
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