countdown

noun

count·​down ˈkau̇nt-ˌdau̇n How to pronounce countdown (audio)
Synonyms of countdownnext
: an audible backward counting in fixed units (such as seconds) from an arbitrary starting number to mark the time remaining before an event
also : preparations carried on during such a count
count down intransitive verb

Examples of countdown in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Also, a valve connected to Orion’s hatch pressurization had issues during last month’s countdown demonstration in the VAB. Richard Tribou, The Orlando Sentinel, 10 Jan. 2026 New York switched to Chicago just before midnight, and Chance the Rapper did one song and did the countdown to midnight. Chicago Tribune, 10 Jan. 2026 Its website’s home page features a countdown clock marking the days until Vasquez is due to deliver his recommendations. David Hudnall, Kansas City Star, 8 Jan. 2026 Coogan stretches his massive wingspan and sways to the music as the on-air countdown ticks toward zero. Julia Black, Vanity Fair, 8 Jan. 2026 See All Example Sentences for countdown

Word History

First Known Use

circa 1952, in the meaning defined above

Time Traveler
The first known use of countdown was circa 1952

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Cite this Entry

“Countdown.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/countdown. Accessed 14 Jan. 2026.

Kids Definition

countdown

noun
count·​down ˈkau̇nt-ˌdau̇n How to pronounce countdown (audio)
: the process of counting off backward in fixed units (as seconds) the time remaining before an event (as the launching of a rocket)

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