Subsurface

adj, noun

Definitions

Adjective
  1. 1
    Below the surface. not-comparable

    "variations in subsurface conditions"

Adjective
  1. 1
    beneath the surface wordnet
Noun
  1. 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 support it."

  2. 2
    A surface which is a submanifold of another surface. countable

Etymology

Etymology 1

From sub- + surface.

Etymology 2

From sub- + surface.

Next best steps

Mini challenge

Unscramble this word: subsurface