Meaning Of The Word Zero hour

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What's the definition of Zero hour? Find Zero hour meanings, definitions and more at the Real Dictionary online.

Zero hour Meaning

Zero hour Definition
Zero hour Definition

What's The Definition Of Zero hour?

zero hour in American English
the hour or moment at which a military attack or other important operation is to begin
noun: the time set for the beginning of a military attack or operation

zero hour in British English
noun: the time set for the start of an attack or the initial stage of an operation

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