XXX

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XXX may refer to:

Contents

Numbers[edit]

A mark indicating "extra strong"[edit]

Various contexts, but especially:

Communication[edit]

A warning or danger signal, or symbol for doubtful/unknown

  • XXX, an indication of urgency in radio communication, less urgent than SOS
  • XXX, a comment to warn other programmers of problematic or misleading code
  • XXX, the code for "no currency" in ISO 4217
  • XXX, the code for "unspecified nationality" on a machine-readable passport

Popular culture[edit]

Other[edit]

See also[edit]