Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A unit of explosive force equal to that of one billion (109) tons of TNT.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. 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.

Etymologies

metric prefix giga- +‎ ton (Wiktionary)

Examples

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