subsurface

listen to the pronunciation of subsurface
İngilizce - İngilizce
A surface which is a submanifold of another surface
below the surface

variations in subsurface conditions.

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 supoort it.

Underground Below the earth's surface
beneath the surface; "subsurface materials of the moon
The geologic zone below the surface of the earth; includes rock and sediment materials lying near but not exposed to the earth’s surface
beneath the surface; "subsurface materials of the moon"
Situated in an area beneath a surface; especially the surface of a planet or a body of water
{s} located below the surface
subsurface