- the fertile, upper part of the soil.
- to cover (land) with topsoil.
Origin of topsoil
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for topsoil
If the topsoil is very poor, get some good, rich, black soil.The Library of Work and Play: Gardening and Farming.
Ellen Eddy Shaw
We start out in about a foot of topsoil, then some hard rock and then more hard rock.Operation Earthworm
The prairie vole makes a tortuous network of paths through the grass and honeycombs the topsoil with its tunnels.
In Brazil the best soil is known as terra roxa, a topsoil of red clay three or four feet thick with a gravel subsoil.All About Coffee
William H. Ukers
Bless the red-skins who bred maize, the great preserver of life and damn them for breeding maize the great destroyer of topsoil.The Syndic
- the surface layer of soil
- to spread topsoil on (land)
- 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
Word Origin and History for topsoil
Online Etymology Dictionary, © 2010 Douglas Harper
- 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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
The thin, rich layer of soil where most nutrients for plants are found.
Most of the land-based biological activity of the Earth takes place here.
The loss of topsoil through erosion is a major agricultural problem.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.