Subsoil: meaning, definitions and examples

This term is used to describe the layer of soil lying immediately beneath the topsoil. Farmers and gardeners often refer to subsoil when discussing soil structure and planting depth.

• The subsoil in this area is rich in clay, making it hard to dig.
• Before planting trees, it's important to understand the quality of the subsoil.

This phrase is a more general term that can be used to describe any layer beneath the surface of the ground. It is suitable for both casual and technical conversations.

• They found an ancient artifact in an underground layer of the site.
• The engineers had to account for the underground layers when designing the foundation.

Utilized mainly in scientific or technical discussions, substratum refers to an underlying layer or substance, particularly one on which a process occurs. This term is often used in fields like biology, geology, and construction.

• Mosses can thrive on various kinds of substratum, including rocks and tree trunks.
• The construction site required a thorough examination of the substratum for stability.

Commonly used in environmental or agricultural contexts, this phrase refers to the soil that lies beneath the topsoil. It is important for understanding root growth and soil health.

• The underlying soil needs to be tested for nutrients before planting a new crop.
• Erosion has exposed the underlying soil in some parts of the field.