έκρηξη

Etymology: From Ancient Greek ἔκρηξις (ekrēxis), derived from ἐκρήγνυμι (ekrēgnumi) meaning 'to break forth, burst out'. The root comes from ἐκ- (ek-) 'out' + ῥήγνυμι (rhēgnumi) 'to break'. This same root gives us English words like 'hemorrhage' (blood bursting out).