subsurface
Something that is below the layer that is on the surface.
Adjective
- Below the surface.
- variations in subsurface conditions
Origin
Etymology tree Proto-Indo-European *upó Proto-Italic *supo Latin sub Latin sub-der. English sub- Middle French surfacebor. English surface English subsurface From sub- + surface.
Noun
- Something that is below the layer that is on the surface.
- Before we could lay the flooring we had to lay a subsurface under it to keep it flat and support it.
- A surface which is a submanifold of another surface.