After being seriously injured by the Nephilim, Hibiki is unable to control her Symphogear.  She flies into a rage, destroying the Nephilim and ripping out its heart.  During the post-fight medical exam, it's discovered that if she continues to use her gear, she'll die.
You could call it an autonomous-breeder reactor.
يمكنُ أن تسمِّيه بمفاعِل مولِّد ذاتي
Er ist quasi ein
eigenständiger Brutkasten.
Es como un reactor 
autosostenible y autónomo.
Es como un reactor 
autosustentable y autónomo.
qui agit comme un réacteur
qui s’autoreproduirait.
Può essere anche definito
un reattore autofertilizzante.
Você pode chamá-lo de reator
 regenerador autônomo.