Dictionary.com
definitions
  • synonyms

downhole

[doun-hohl]
noun
  1. a hole dug or drilled downward, as in a mine or a petroleum or gas well.
Show More
adjective
  1. occurring or situated in such a hole.
Show More

Origin of downhole

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for downhole

downhole

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