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Fluorene vs Undefined - What's the difference?

fluorene | undefined |

As a noun fluorene

is fluorene.

As an adjective undefined is

lacking a definition or value.

fluorene

English

Noun

(wikipedia fluorene) (en noun)
  • (organic compound) A polycyclic aromatic hydrocarbon consisting of two benzene rings joined together directly, and also via a methylene bridge; it is used in light-emitting diodes.

    • Derived terms

    *oligofluorene *polyfluorene *terfluorene

    See also

    *fluorine

    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