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Fluctuation vs Undefined - What's the difference?

fluctuation | undefined |

As a noun fluctuation

is a motion like that of waves; a moving in this and that direction.

As an adjective undefined is

lacking a definition or value.

fluctuation

English

Noun

(en noun)
  • A motion like that of waves; a moving in this and that direction.
    • the fluctuations of the sea
  • A wavering; unsteadiness.
    • fluctuations of opinion
    fluctuations of prices
  • In medicine, a wave-like motion or undulation of a fluid in a natural or abnormal cavity (e.g. pus in an abscess), which is felt during palpation or percussion.

    • Related terms

    * fluctuate

    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