Definitions
There is 1 meaning of the phrase
Zero Hour.
Zero Hour - as a noun
The time set for the start of an action or operation
Example Sentences
"The soldiers were given specific instructions for the attack at zero hour."
"The countdown reached zero hour and the spacecraft was launched into space."
"Our team has been preparing for this competition since zero hour."
"At zero hour, the participants were ready to begin the marathon."
"The suspense was building as we approached zero hour for the big announcement."
