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View definitions for H-hour

H-hour

noun as in target date

noun as in target date

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Example Sentences

We breathed the standard helium-oxygen mix at normal pressure until about four hours before H-hour.

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On this page you'll find 37 synonyms, antonyms, and words related to H-hour, such as: a-day, d-day, deadline, target day, term, and terminal date.

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.

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