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downhole

[ doun-hohl ]
/ ˈdaʊnˌhoʊl /
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noun
a hole dug or drilled downward, as in a mine or a petroleum or gas well.
adjective
occurring or situated in such a hole.
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Origin of downhole

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

British Dictionary definitions for downhole

downhole
/ (ˈdaʊnˌhəʊl) /

adjective
(in the oil industry) denoting any piece of equipment that is used in the well itself
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
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