megaton

noun5

1. •
   A measure of the strength of an explosion or a bomb based on how many million tons of TNT would be needed to produce the same energy. (A derived unit for TNT equivalent.)

   • The sins of all our fathers, being dumped on us — the sons The only choice we're given is: How many megatons? And I eschew you! And I say: Screw you! And I hope you're blue, too. — 1986
2. •
   One million tons.
3. •
   One million short tons (10⁶ × 2000 lb).
4. •
   One million long tons (10⁶ × 2240 lb).
5. •
   One million metric tons (10⁶ × 2204.6 lb).