count down
US /ˈkaʊnt daʊn/
UK /ˈkaʊnt daʊn/
1.
to announce the numbers in reverse order to zero, especially before the launch of a rocket or the start of an event
:
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The engineers began to count down the final minutes before liftoff.
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We're going to count down from ten to zero.
2.
to eagerly await an event
:
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The children are counting down the days until Christmas.
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I'm counting down to my vacation next month.