subsurface Hear it!

subsurface definition

sub·sur·face (sub′sʉr′fis)

adjective

lying below the surface, esp. of the earth, the oceans, etc.

noun

a subsurface part

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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