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topsoil

[top-soil] /ˈtɒpˌsɔɪl/
noun
1.
the fertile, upper part of the soil.
verb (used with object)
2.
to cover (land) with topsoil.
Origin
1860-1865
1860-65; top1 + soil1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for topsoil
  • Fill the drainage holes thus created with good-quality topsoil.
  • Quick renovation kept topsoil and runoff out of the creek that forms the house's rear property line.
  • Learn how to minimize topsoil loss and optimize water retention.
  • If its authors have identified these correctly, it fits in well with an overall picture showing loss of forests and topsoil.
  • McKay fruitlessly looked for cyanobacteria and organic molecules in the topsoil and underground.
  • The topsoil is relatively thin and was formed by weathering of the underlying bedrock.
  • Since prehistoric times, locals have scratched away the topsoil from these hills to expose the chalk underneath.
  • Villagers may be persuaded to build terraces to stop topsoil running off.
  • Heavy rainfall in the interior gives the river water its earthy colour, but inland logging eases its removal of the topsoil.
  • When it rains, and especially when there are cyclones, landslides bring topsoil down to the sea.
British Dictionary definitions for topsoil

topsoil

/ˈtɒpˌsɔɪl/
noun
1.
the surface layer of soil
verb (transitive)
2.
to spread topsoil on (land)
3.
to remove the topsoil from (land)
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
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Word Origin and History for topsoil
n.

1836, from top (n.1) + soil (n.).

Online Etymology Dictionary, © 2010 Douglas Harper
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topsoil in Science
topsoil
  (tŏp'soil')   
The upper portion of a soil, usually dark colored and rich in organic material. It is more or less equivalent to the upper portion of an A horizon in an ABC soil.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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topsoil in Culture

topsoil definition


The thin, rich layer of soil where most nutrients for plants are found.

Note: Most of the land-based biological activity of the Earth takes place here.
Note: The loss of topsoil through erosion is a major agricultural problem.
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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