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Rheostat vs Undefined - What's the difference?

rheostat | undefined |

As a noun rheostat

is rheostat.

As an adjective undefined is

lacking a definition or value.

rheostat

English

Noun

(en noun)
  • An electrical resistor, with two terminals, whose resistance is continuously variable by moving a knob or slider.

    • Synonyms

    * dimmer (when applied to lights)

    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