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adit

 
Dictionary: ad·it   (ăd'ĭt) pronunciation
adit
Source
n.
An almost horizontal entrance to a mine.

[Latin aditus, access, from past participle of adīre, to approach : ad-, ad- + īre, to go.]


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(AD-it)

noun
1. Access; entrance; admission.
2. A nearly horizontal passage leading into a mine.

Etymology
From Latin aditus (approach, entrance), from adire (to approach), from ire (to go). Ultimately from Indo-European root ei- (to go) that is also the ancestor of words such as exit, transit, circuit, itinerary, and obituary

Usage
"As the tramcar passed beneath the low-slung adit, [Sam] Sanders's head was crushed against the timbers." — Fred Girard; The Last Bus Stop; The Detroit News; Jan 30, 2006.


A tunnel driven horizontally into a hillside for the purpose of mining. Such shafts were common in the early development, for example, of the South Wales coalfield.

Architecture: adit
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[MC]

An early style of mining in which a tunnel is driven into a hillside in order to follow or intercept seams of useful stone or veins of ore. Generally, adits are dug at a slight angle so that water naturally drains out of the tunnel.

 
adit (ăd'ĭt), in mining, underground passage excavated nearly horizontally, with one end open to the earth's surface, usually used to service a mine. The adit end is the furthermost end from the surface, i.e., the location where miners work. The adit collar is the area where an adit opens to the surface and must be reinforced against any surface weakness.


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a nearly horizontal shaft to the surface in a mine
 
 

 

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Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.  Read more
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Geography Dictionary. A Dictionary of Geography. Copyright © Susan Mayhew 1992, 1997, 2004. All rights reserved.  Read more
Architecture. McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc. All rights reserved.  Read more
Archaeology Dictionary. The Concise Oxford Dictionary of Archaeology. Copyright © 2002, 2003 by Oxford University Press. All rights reserved.  Read more
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