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Focal vs Undefined - What's the difference?

focal | undefined |

As adjectives the difference between focal and undefined

is that focal is belonging to, concerning, or located at a focus while undefined is lacking a definition or value.

focal

English

Adjective

(-)
  • Belonging to, concerning, or located at a focus
  • (medicine) limited to a small area

    • Derived terms

    * focal length * focal plane * focal point

    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