[ uhn-der-sur-fis ]
See synonyms for undersurface on Thesaurus.com
  1. underside; bottom surface.

  1. submerged; under the surface, as of water, earth, etc.: the undersurface speed of a submarine.

Origin of undersurface

First recorded in 1725–35; under- + surface

Words Nearby undersurface

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use undersurface in a sentence

  • The nest was some forty feet from the ground, on the undersurface of a shelf of rock.

    The Red Dust | Murray Leinster
  • The undersurface, originally a bright red, turns brown and runs in every direction into a mass of dark stalactites.

    The Life of the Fly | J. Henri Fabre
  • There had been a lot of that at first, in the early days before the transfer to undersurface was complete.

    The Defenders | Philip K. Dick
  • You couldn't expect to have everything perfect, living undersurface, with an artificial sun and artificial food.

    The Defenders | Philip K. Dick
  • Until our families can come up from undersurface, it's going to be pretty lonesome, but we'll have to manage.

    The Defenders | Philip K. Dick