ZERO HOUR

Pronunciation (US):

(GB):

IPA (US):

 Dictionary entry overview: What does zero hour mean? 

• ZERO HOUR (noun)
  The noun ZERO HOUR has 1 sense:

1. the time set for the start of an action or operation

  Familiarity information: ZERO HOUR used as a noun is very rare.

 Dictionary entry details 

• ZERO HOUR (noun)

Sense 1

Meaning:

The time set for the start of an action or operation

Classified under:

Nouns denoting time and temporal relations

Hypernyms ("zero hour" is a kind of...):

hour; time of day (clock time)