gigaton

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

   Holonyms: teraton < petaton < exaton (rare) < zettaton (rare) < yottaton (rare)

   Meronyms: ton of TNT < kiloton < megaton

2. One billion tons.

   One billion short tons (10⁹ × 2000 lb).

3. One billion long tons (10⁹ × 2240 lb).

4. One billion metric tons (10⁹ × 2204.6 lb).

   Meronyms: kiloton < megaton

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• gigatonnealternative