Gigaton definition

gĭgə-tŭn, jĭg-
A unit of explosive force equal to that of one billion (109 ) tons of TNT.
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The explosive force of one billion tons of TNT: a unit for measuring the power of thermonuclear weapons.
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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.
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One billion tons.
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Other Word Forms

Noun

Singular:
gigaton
Plural:
gigatons

Origin of gigaton

  • metric prefix giga- +‎ ton

    From Wiktionary