Sentence:  Long-lived carbon-14 from the fusion process would cause four million embryonic , neonatal or childhood deaths and stillbirths over the next 20 generations , and between 200000 and one million human beings now living would have their lives <WSD>cut</WSD> short by radiation-produced diseases such as leukemia . 
Meaning of the word marked with <WSD> tags:  interrupt before its natural or planned end