subsurface

[ suhb-sur-fuh s, suhb-sur- ]
/ sʌbˈsɜr fəs, ˈsʌbˌsɜr- /

adjective

below the surface, especially of a body of water.

Origin of subsurface

First recorded in 1770–80; sub- + surface
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for sub-surface

British Dictionary definitions for sub-surface

sub-surface


noun

the layer just below the surface of water, the earth, etc
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012