adit

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ad·it

 (ăd′ĭt)
n.
An almost horizontal entrance to a mine.

[Latin aditus, access, from past participle of adīre, to approach : ad-, ad- + īre, to go; see ei- in Indo-European roots.]

adit

(ˈædɪt)
n
(Mining & Quarrying) an almost horizontal shaft into a mine, for access or drainage
[C17: from Latin aditus an approach, from adīre, from ad- towards + īre to go]

ad•it

(ˈæd ɪt)

n.
a nearly horizontal passage leading into a mine.
[1595–1605; < Latin aditus an approach]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.adit - a nearly horizontal passage from the surface into a mineadit - a nearly horizontal passage from the surface into a mine
mine - excavation in the earth from which ores and minerals are extracted
passage - a way through or along which someone or something may pass