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1.
A system aboard starships whose single purprose is to destroy the ship. Usually used to prevent bad guys from capturing the ship.

Usuallt requires at least 2-3 senior officers to activate, although on Voyager, Janeway could do it on her authorization alone.
Computer, initiate auto destruct sequence, authorization Janeway PI Alpha 47. Set at 5 minute silent countdown ... enable.

Computer: Bleeeep, auto destruct system enaged, warp core overload in 4 minutes 55 seconds. There will be no further audio warnings.
by anonymous November 04, 2004