SUBSOIL
Meaning of SUBSOIL in English
n.
Pronunciation: ' s ə b- ˌ so ̇ i(- ə )l
Function: noun
Date: 1796
: the stratum of weathered material that underlies the surface soil
Merriam Webster Collegiate English Dictionary.
Merriam Webster - Энциклопедический словарь английского языка.
2012