zero hour | Definition of zero hour in English at AdvanceDictionary.com

Advance Dictionary

Definition of Zero Hour in English :

Zero Hour

see synonyms of zero hour

Noun

1. zero hour

the time set for the start of an action or operation

WordNet Lexical Database for English. Princeton University. 2010.

Zero Hour

see synonyms of zero hour

noun

1. military

the time set for the start of an attack or the initial stage of an operation

2. informal

a critical time, esp at the commencement of an action

Collins English Dictionary. Copyright © HarperCollins Publishers

Zero Hour

see synonyms of zero hour

1.

the hour or moment at which a military attack or other important operation is to begin

2.

any crucial or decisive moment

Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by Houghton Mifflin Harcourt. All rights reserved.

Zero Hour

see synonyms of zero hour

n.

The scheduled time for the start of an operation or action, especially a combat operation of great size. Also called H-hour.

The American Heritage ® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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