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Petroleum vs Undefined - What's the difference?

petroleum | undefined |

As a noun petroleum

is petroleum.

As an adjective undefined is

lacking a definition or value.

petroleum

English

(wikipedia petroleum)

Alternative forms

* (archaic)

Noun

(en-noun)
  • A flammable liquid ranging in color from clear to very dark brown and black, consisting mainly of hydrocarbons, occurring naturally in deposits under the Earth's surface.

    • Synonyms

    * oil * gas * gasoline * petroil * petrol

    Derived terms

    * packaged petroleum product * petroleum coke * petroleum ether * petroleum jelly * petroleum spirit

    Related terms

    * (l)

    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