undersoil

[ uhn-der-soil ]
/ ˈʌn dərˌsɔɪl /

noun

Origin of undersoil

First recorded in 1700–10; under- + soil1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for undersoil

undersoil

/ (ˈʌndəˌsɔɪl) /

noun

another word for subsoil (def. 1a)
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