megaton

1. A measure of explosive power (of an atomic weapon) equal to that of one million tons of TNT (synset 113668971)
   is a type of: explosive unit - any unit for measuring the force of explosions
2. One million tons (synset 113743909)
   is a type of: avoirdupois unit - any of the units of the avoirdupois system of weights
   has: kiloton - one thousand tons

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