subsoil

[ suhb-soil ]
/ ˈsʌbˌsɔɪl /

noun

the bed or stratum of earth or earthy material immediately under the surface soil.
Also called undersoil.

Origin of subsoil

First recorded in 1790–1800; sub- + soil1

Example sentences from the Web for subsoil

British Dictionary definitions for subsoil

subsoil
/ (ˈsʌbˌsɔɪl) /

noun

  1. Also called: undersoil the layer of soil beneath the surface soil and overlying the bedrock
  2. (as modifier)a subsoil plough

verb

(tr) to plough (land) to a depth below the normal ploughing level and so break up the subsoil

Derived forms of subsoil

subsoiler, noun

Scientific definitions for subsoil

subsoil
[ sŭbsoil′ ]

In an ABC soil, the B horizon. The term was formerly used to mean the layer of earth below the humus or surface soil.