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[bawr-hohl, bohr-] /ˈbɔrˌhoʊl, ˈboʊr-/
noun, Mining.
a hole drilled in the earth, as for the purpose of extracting a core, releasing gas, oil, water, etc.
Origin of borehole
1700-10; bore2+ hole Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for borehole
  • Cold water is pumped down a deep borehole and returns superheated to spin a turbine.
  • One solution would be to drill a second intersecting borehole before exploiting the site.
  • As an oil well is drilled casings are cemented in place at different depths to reinforce the borehole.
  • Hockey sticks are also seen in borehole, stalagmite and ice cores bing.
  • Sealing up the casing of a deep borehole is not easy.
  • borehole seismic data can typically achieve a much higher signal-to-noise ratio than what is possible in surface seismic data.
  • borehole quality deteriorates with time after drilling.
  • borehole permeability tests are performed intermittently as the borehole is advanced.
  • When the primer is the first cartridge or one of the first cartridges to be loaded into the borehole, it is called bottom priming.
  • After meeting all regulatory criteria, the borehole geophysical and hydraulic data should guide the completion design.
British Dictionary definitions for borehole


a hole driven into the ground to obtain geological information, release water, 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
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