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Birkie vs Undefined - What's the difference?

birkie | undefined |

As a noun birkie

is (skiing) a kind of american cross country ski race.

As an adjective undefined is

lacking a definition or value.

birkie

English

Noun

(en noun)
  • (skiing) a kind of American cross country ski race.

    • Synonyms

    * American Birkebeiner ----

    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