As far as I am able to tell
introduced as a term used in nuclear weapon
. Any weapon of mass destruction
, when use
d on a populated area
) will kill
people than it could!
The reason is simple: the amount of energy released is sufficient to vapourise (literally, unfortunately) a huge number of people. But there are not that many people in the blast radius. Hence overkill: the excess energy released in the region.
Yet another reason why nuclear weapons should never be used.