Definition of self-destruct verb from the Oxford Advanced American Dictionary

     

    self-destruct

     verb
    verb
    NAmE//ˌsɛlf dɪˈstrʌkt//
     
    [intransitive]Verb Forms present simple I / you / we / they self-destruct
     
    he / she / it self-destructs
     
    past simple self-destructed
     
    -ing form self-destructing
     
     
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  1. 1(especially of a machine, etc.) to destroy itself, usually by exploding This tape will self-destruct in 30 seconds.
  2. 2(figurative) In the last half-hour of the movie the plot rapidly self-destructs.
See the Oxford Advanced Learner's Dictionary entry: self-destruct