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Phantom vs Undefined - What's the difference?

phantom | undefined |

As a proper noun phantom

is nickname of the f-4b jet fighter flown by marines in vietnam.

As an adjective undefined is

lacking a definition or value.

phantom

English

Alternative forms

* fantom (archaic)

Noun

(en noun)
  • Something apparently seen, heard, or sensed, but having no physical reality; a ghost or apparition; something elusive or delusive.
  • An image that appears only in the mind; an illusion.

    • Synonyms

    * ghost * See also

    Derived terms

    * phantom limb * phantom pain

    Adjective

    (-)
  • Illusive.
  • *{{quote-book, year=1899, author=(Stephen Crane)
    • , title=, chapter=1 , passage=[…] (it was the town's humour to be always gassing of phantom investors who were likely to come any moment and pay a thousand prices for everything) — “[…] Them rich fellers, they don't make no bad breaks with their money. […]”}}
  • Fictitious or nonexistent.

    • External links

    *

    Anagrams

    *

    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