H hour


: the hour set for launching a specific tactical operation

Word History


H, abbreviation for hour

First Known Use

1918, in the meaning defined above

Time Traveler
The first known use of H hour was in 1918

Dictionary Entries Near H hour

Cite this Entry

“H hour.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/H%20hour. Accessed 5 Dec. 2023.

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