Definitions for "Megaton"
Keywords:  tnt, kiloton, tons, ergs, explosion
This is approximately the amount of energy that would be released by the explosion of 1,000 kilotons (1,000,000 tons) of TNT.
a measure of explosive power (of an atomic weapon) equal to that of one million tons of TNT
the energy of an explosion that is equivalent to an explosion of 1 million tons of TNT. One megaton is equal to a quintillion (1018) calories. See also kiloton.