Definition of H-hour in English:

H-hour

noun

The time of day at which an attack, landing, or other military operation is scheduled to begin.
（进攻、登陆等）军事行动预定开始时刻
they assured the Marines that at H-hour the reef would be covered by five feet of water
Example sentencesExamples
- Preplanned raids at specific H-hours typified the 4th ID's operations.
- He will also be there with the troops in body armour and helmet minutes before H-hour - the moment the attack begins - when live ammunition is issued, to try to calm any last-minute nerves.
- H-hour of 2359 would produce maximum surprise, making it difficult for enemy forces to mobilize to repel an invasion.
- A compromise was reached and the H-hour was changed from 1800 hours to 1405 hours on 6 October.
- However, in the History of the War at Sea, the ships in the Western Task Force, opened fire at H-hour on D-day, an hour before those of us who were in the Eastern Task Force.

Origin

First World War: from H (for hour) + hour.

Definition of H-hour in US English:

H-hour

nounˈāCH ˈˌou(ə)r

The time of day at which an attack, landing, or other military operation is scheduled to begin.
（进攻、登陆等）军事行动预定开始时刻
they assured the Marines that at H-hour the reef would be covered by five feet of water
Example sentencesExamples
- A compromise was reached and the H-hour was changed from 1800 hours to 1405 hours on 6 October.
- He will also be there with the troops in body armour and helmet minutes before H-hour - the moment the attack begins - when live ammunition is issued, to try to calm any last-minute nerves.
- However, in the History of the War at Sea, the ships in the Western Task Force, opened fire at H-hour on D-day, an hour before those of us who were in the Eastern Task Force.
- Preplanned raids at specific H-hours typified the 4th ID's operations.
- H-hour of 2359 would produce maximum surprise, making it difficult for enemy forces to mobilize to repel an invasion.

Origin

First World War: from H (for hour) + hour.

单词	H-hour
释义	Definition of H-hour in English: H-hour noun The time of day at which an attack, landing, or other military operation is scheduled to begin. （进攻、登陆等）军事行动预定开始时刻 they assured the Marines that at H-hour the reef would be covered by five feet of water Example sentencesExamples Preplanned raids at specific H-hours typified the 4th ID's operations. He will also be there with the troops in body armour and helmet minutes before H-hour - the moment the attack begins - when live ammunition is issued, to try to calm any last-minute nerves. H-hour of 2359 would produce maximum surprise, making it difficult for enemy forces to mobilize to repel an invasion. A compromise was reached and the H-hour was changed from 1800 hours to 1405 hours on 6 October. However, in the History of the War at Sea, the ships in the Western Task Force, opened fire at H-hour on D-day, an hour before those of us who were in the Eastern Task Force. Origin First World War: from H (for hour) + hour. Definition of H-hour in US English: H-hour nounˈāCH ˈˌou(ə)r The time of day at which an attack, landing, or other military operation is scheduled to begin. （进攻、登陆等）军事行动预定开始时刻 they assured the Marines that at H-hour the reef would be covered by five feet of water Example sentencesExamples A compromise was reached and the H-hour was changed from 1800 hours to 1405 hours on 6 October. He will also be there with the troops in body armour and helmet minutes before H-hour - the moment the attack begins - when live ammunition is issued, to try to calm any last-minute nerves. However, in the History of the War at Sea, the ships in the Western Task Force, opened fire at H-hour on D-day, an hour before those of us who were in the Eastern Task Force. Preplanned raids at specific H-hours typified the 4th ID's operations. H-hour of 2359 would produce maximum surprise, making it difficult for enemy forces to mobilize to repel an invasion. Origin First World War: from H (for hour) + hour.
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