undersurface

[ uhn-der-sur-fis ]

noun

1. underside; bottom surface.

adjective

1. submerged; under the surface, as of water, earth, etc.:

   the undersurface speed of a submarine.

Word History and Origins

Origin of undersurface¹

First recorded in 1725–35; under- + surface

Example Sentences

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

From Project Gutenberg

The undersurface, originally a bright red, turns brown and runs in every direction into a mass of dark stalactites.

From Project Gutenberg

There had been a lot of that at first, in the early days before the transfer to undersurface was complete.

From Project Gutenberg

You couldn't expect to have everything perfect, living undersurface, with an artificial sun and artificial food.

From Project Gutenberg

Until our families can come up from undersurface, it's going to be pretty lonesome, but we'll have to manage.

From Project Gutenberg