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Definition of H-hour
1. Noun. (figuratively) The hour at which any major event planned for the future is set to begin, as used in United States military. ¹
¹ Source: wiktionary.com
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1. Noun. (figuratively) The hour at which any major event planned for the future is set to begin, as used in United States military. ¹
¹ Source: wiktionary.com