self-extinction

noun
self-ex·​tinc·​tion | \ ˌself-ik-ˈstiŋ(k)-shən How to pronounce self-extinction (audio) \
plural self-extinctions

Definition of self-extinction

1 : the act of causing one's own extinction or the state of having caused one's own extinction a civilization headed towards self-extinction
2 : suicide … an escaped schizophrenic also wends his way there with self-extinction in mind …— Chuck Twardy

First Known Use of self-extinction

1826, in the meaning defined at sense 1

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The first known use of self-extinction was in 1826

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