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undersurface

American  
[uhn-der-sur-fis] / ˈʌn dərˌsɜr fɪs /

noun

  1. underside; bottom surface.

adjective

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

    the undersurface speed of a submarine.

Etymology

Origin of undersurface

First recorded in 1725–35; under- + surface

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.

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