Specifically, of a program: that has terminated but is still shown in the list of processes because the parent process that created it is still running and has not yet reaped it. See also zombie, zombie process
having ceased to exist or live; "the will of a defunct aunt"; "a defunct Indian tribe"
If something is defunct, it no longer exists or has stopped functioning or operating. the leader of the now defunct Social Democratic Party. not existing any more, or not useful any more (defunctus, past participle of defungi )