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Citadel vs Undefined - What's the difference?

citadel | undefined |

As a noun citadel

is a strong fortress that sits high above a city.

As an adjective undefined is

lacking a definition or value.

citadel

English

Noun

(en noun)
  • A strong fortress that sits high above a city.
  • (sometimes, figurative) A stronghold or fortified place.
  • * 1836 , Alexander Slidell Mackenzie, The American in England (page 269)
    • Intrenched within the citadel of our apartment, and cheered by the comfortings of a coal fire, we passed the day in letter-writing, conversation, or gazing from the sheltered security of our windows upon the agitated sea

    Anagrams

    * ----

    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