Definition of subsoil in English:

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Pronunciation: /ˈsʌbsɔɪl/


[mass noun]
The soil lying immediately under the surface soil.
Example sentences
  • Wetland creation attempts are often initiated by the removal of upland surface soil materials exposing mineral subsoil strata.
  • Heavy clay subsoil or sandy soil with low fertility must be improved if roses are to be grown successfully in them.
  • When digging out the bed, discard any heavy, tight subsoil and save the topsoil.


[with object] (usually as noun subsoiling)
Plough (land) so as to cut into the subsoil: to gain maximum benefit from subsoiling this operation needs to be done when the lower levels of the soil are relatively dry
More example sentences
  • Studies in the past showed that subsoiling clay soil in the spring does not improve cotton harvests.

For editors and proofreaders

Line breaks: sub|soil

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