H hour

noun

Definition of H hour

: the hour set for launching a specific tactical operation

First Known Use of H hour

1918, in the meaning defined above

History and Etymology for H hour

H, abbreviation for hour

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Dictionary Entries near H hour

hheth

HHG

H hinge

H hour

HHS

hi

HI

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Cite this Entry

“H hour.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/H%20hour. Accessed 6 May. 2021.

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