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Blowback vs Undefined - What's the difference?

blowback | undefined |

As a noun blowback

is (firearms) a type of action where the pressure from the fired cartridge blows a sliding mechanism backward to extract the fired cartridge, chamber another cartridge, and cock the hammer.

As an adjective undefined is

lacking a definition or value.

blowback

English

Noun

(en noun)
  • (firearms) A type of action where the pressure from the fired cartridge blows a sliding mechanism backward to extract the fired cartridge, chamber another cartridge, and cock the hammer.
  • An unintended adverse result, especially of a political action.
  • (slang) The act of shotgunning (inhaling from a pipe etc. and exhaling into another smoker's mouth).

    • 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