undersoil

• Nom désignant la couche de sol située sous la couche superficielle et au-dessus de la roche mère.

A noun referring to the layer of soil located beneath the topsoil and above the bedrock.

indénombrable

1. Subsoil layerC1formal

   The layer of soil located beneath the topsoil and above the bedrock, often containing less organic matter.

   sous-sol (couche de sol)

   • The roots of the tree penetrated deep into the undersoil.
   • Farmers often test the undersoil for nutrient levels.
   • Construction workers had to dig through the undersoil to lay the foundation.

   Synonymessubsoilsubstratum