(noun, adjective)


1. beneath the surface

- subsurface materials of the moon

Similar word(s): belowground, underground, submarine, undersea, submerged, submersed, underwater, subterranean, subterraneous

Sentences with subsurface as an adjective:

- variations in subsurface conditions


1. 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.

2. (countable, mathematics) A surface which is a submanifold of another surface.