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Adit vs Undefined - What's the difference?

adit | undefined |

As a noun adit

is a horizontal or nearly horizontal passage from the surface into a mine as contrasted to a shaft which is a vertical entry passage an adit may be used for ventilation, haulage, drainage, or other purposes.

As an adjective undefined is

lacking a definition or value.

adit

English

Noun

(en noun)
  • A horizontal or nearly horizontal passage from the surface into a mine as contrasted to a shaft which is a vertical entry passage. An adit may be used for ventilation, haulage, drainage, or other purposes.
  • * 2006 , Mike Hetman, IronMiners.com [http://www.ironminers.com/ironmines/old-mine-1.htm]:
    • The Old Mine is currently entered through an upper adit as the main is no longer accessible.
  • * 2008 , Iain M. Banks, Matter , page 445:
    • The adit sloped downwards into the bowels of some long-fallen building, following a passage that had silted up when the city had first been buried.

    References

    * ----

    undefined

    English

    Adjective

    (wikipedia undefined) (-)
  • Lacking a definition or value.
  • (mathematics, computing) That does not have a meaning and is thus not assigned an interpretation.
    • The result of division by zero is undefined .

    Antonyms

    * defined