gigatonne

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A form of gigaton — 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.)

Similar
Gt
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Meanings

noungigatonne (plural gigatonnes)

plural gigatonnes

  1. alternativeAlternative spelling of gigaton.

Synonyms & antonyms

nouna unit of weight equivalent to 1 billion tonnes.

Similar
Gt
Broader
metric weight unitweight unit
Also see
gt

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

From giga- + tonne.

Full word history & related roots →
Cite this entry
APA

gigatonne. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/gigatonne

MLA

“gigatonne.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/gigatonne. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “gigatonne,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/gigatonne.

Source: gigatonne on Wiktionary, CC BY-SA 4.0.