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.
Based on the countdown clock running on its website, U-Boat Worx will complete the official handover to its first Super Sub customer on Thursday. New Atlas, 21 Mar. 2026 The flight originally was planned for early February, but it was delayed after hydrogen fuel leaks were detected during a dress rehearsal countdown. William Harwood, CBS News, 19 Mar. 2026 Disney even launched a live-countdown clock that’s ticking off the months, days, hours, minutes and seconds until the film’s mid-December premiere. Rebecca Rubin, Variety, 18 Mar. 2026 Press the button to start the timer, and to cancel the shot, just twist the ring again during the countdown. Jim Fisher, PC Magazine, 17 Mar. 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 26 Mar. 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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