Meanings
Synonyms & antonyms
nounThe hour at which any major event planned for the future is set to begin, as used in United States military.
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Also see
Origin
The H stands for hour; compare D-Day.
Full word history & related roots →Translations
Chinese Mandarin H時 /H时
- H時 /H时hour at which major event is set to begin
Czech hodina H
- hodina Hhour at which major event is set to begin
Dutch uur U
- uur Uhour at which major event is set to begin
Finnish h-hetki
- h-hetkihour at which major event is set to begin
French heure H
- heure Hhour at which major event is set to begin
German Stunde Null
- Stunde Nullhour at which major event is set to begin
Hebrew שעת ש׳
- שעת ש׳hour at which major event is set to begin
Indonesian Jam-J
- Jam-Jhour at which major event is set to begin
Korean H아워
- H아워 (Hawo)hour at which major event is set to begin
Norwegian Bokmål klokken H
- klokken Hhour at which major event is set to begin
Polish godzina zero
- godzina zerohour at which major event is set to begin
Portuguese hora H
- hora Hhour at which major event is set to begin
Vietnamese giờ G
- giờ Ghour at which major event is set to begin
Cite this entry
APA
H-hour. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/H-hour
MLA
“H-hour.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/H-hour. Accessed November 3, 2026.
Chicago
WatkinsX Dictionary, s.v. “H-hour,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/H-hour.
Source: H-hour on Wiktionary, CC BY-SA 4.0.