megatonnage

noun

1. (countable, uncountable)The destructive power of an explosive, measured in megatons.

   “"We have grown accustomed to a deadly paradox: the world's greatest megatonnage of TNT is buried in the heart of the earth's most productive agricultural area.”

   “That simple idea gained increasing public support in the late 1970s and early 80s as an alternative to the complexities of the arms race, with its continuing posturing and intermittent negotiations about megatonnage, throw weight and inspections.”