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Thunderbolt vs Undefined - What's the difference?

thunderbolt | undefined |

As a noun thunderbolt

is a flash of lightning accompanied by a crash of thunder.

As an adjective undefined is

lacking a definition or value.

thunderbolt

English

Noun

(en noun)
  • A flash of lightning accompanied by a crash of thunder.
  • (figuratively) An event that is terrible, horrific or unexpected.
  • * Dryden
    • the Scipios' worth, those thunderbolts of war
  • Vehement threatening or censure; especially, ecclesiastical denunciation; fulmination.
  • * Hakewill
    • He severely threatens such with the thunderbolt of excommunication.
  • (soccer) A very powerful shot.
  • * {{quote-news
    • , year=2011 , date=February 5 , author=Michael Kevin Darling , title=Tottenham 2 - 1 Bolton , work=BBC citation , page= , passage=Substitute Niko Kranjcar's injury-time thunderbolt gave Tottenham a dramatic win over Bolton.}}
  • (paleontology) A belemnite, or thunderstone.
  • (heraldiccharge) A charge in the form of two joined bundles with four rays of lightning emerging from them, resembling the thunderbolt of Jupiter.

    • Derived terms

    * thunderbolt beetle

    See also

    * thunderclap

    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