Meanings
proper nounDupuy (plural Dupuys)
plural Dupuys
- A surname from French.
In 1964, Dupuy developed the “Theoretical Lethality Index” (TLI), which calculated the lethal capacity of weapons across time. The TLI table showed how many persons a soldier with a weapon could theoretically kill in one hour.
2021 October 20, Jennifer Tucker, “Now that guns can kill hundreds in minutes, Supreme Court should rethink the rights question”, in CNN
Origin
- FrenchDupuy
- EnglishDupuy
Borrowed from French Dupuy.
More words from French
Full word history & related roots →Cite this entry
APA
Dupuy. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/Dupuy
MLA
“Dupuy.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Dupuy. Accessed November 3, 2026.
Chicago
WatkinsX Dictionary, s.v. “Dupuy,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/Dupuy.
Source: Dupuy on Wiktionary, CC BY-SA 4.0.