trapdoor

  1. Noun.  A hinged or sliding door set into a floor or ceiling.
  2. Noun.  (context, theater) Such a trap set into the floor of a stage to allow fast exits and entrances.
  3. Noun.  (computing) A secret method of obtaining access to a program or online system; a backdoor.
  4. Noun.  (math, cryptography) The special information that permits the inverse of a trapdoor function to be easily computed.

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This entry was last updated on RefTopia from its source on 3/20/2012.