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[ad-it] /ˈæd ɪt/
an entrance or a passage.
Also called entry. Mining. a nearly horizontal passage leading into a mine.
an approach or access.
Origin of adit
1595-1605; < Latin aditus an approach, equivalent to ad- ad- + -i- (stem of īre to go) + -tus suffix of v. action Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for adit
Historical Examples
  • “Push the adit right on, if we have to cut every foot of it with the drill,” he said.

    The Gold Trail

    Harold Bindloss
  • Not likely; but we can get down to the water and go along the adit.

    Menhardoc George Manville Fenn
  • A few minutes sufficed to bring them to the beach at the mouth of the adit.

  • “Why there must be an adit,” cried Hardock, in a tone full of wonder.

    Sappers and Miners George Manville Fenn
  • Note; an adit is a horizontal shaft driven in from the cliff.

    Sappers and Miners George Manville Fenn
  • He doesn't know the difference between an adit and an air-drill.

    Rimrock Trail J. Allan Dunn
  • Pabo could distinguish the marks of the picks used to excavate the adit.

    Pabo, The Priest Sabine Baring-Gould
  • The adit of the mine was at the apex of the hill, which drooped off to the north.

  • Clear away obstacles and open the adit to profitable working?

    The Great Miss Driver Anthony Hope
  • It is also cheaper to drive an adit than to sink an incline.

    The Business of Mining Arthur J. Hoskin
British Dictionary definitions for adit


an almost horizontal shaft into a mine, for access or drainage
Word Origin
C17: from Latin aditus an approach, from adīre, from ad- towards + īre to go
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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Word Origin and History for adit

"entrance," c.1600, from Latin aditus "approach, entrance, a going to or drawing near," from past participle stem of adire "to approach," from ad- "to" (see ad-) + ire "to go," from PIE root *ei- "to go" (see ion).

Online Etymology Dictionary, © 2010 Douglas Harper
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