Wiktionary
n. (context chiefly science fiction English) A feature of a system whereby it destroys itself. vb. (context intransitive chiefly science fiction English) To destroy itself by design (as of a mechanical system).
Usage examples of "autodestruct".
The screen above the control surface changed to show the autodestruct countdown in progress.
And then the third officer necessary to initiate autodestruct was heard.
The probability is high that Terra will autodestruct before Terrans achieve inertial drive, but the converse probability, though small, is real.
So they had arranged that the order to autodestruct was outside my control.
We wouldn't have to do any of this if they carried simple autodestructs.
There are special circumstances when golems can be legally required to carry autodestructs, with triggers operated by radio control.