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.
The countdown is on for Meghan Markle and Prince Harry’s second international tour of 2026, with the Duke and Duchess of Sussex due to return to Australia for the first time in eight years. Lara Walsh, InStyle, 11 Apr. 2026 The 96-page collector's keepsake is available on newsstands and Amazon on April 10, in the countdown to the 100th anniversary of her birth. Janine Henni, PEOPLE, 10 Apr. 2026 The countdown of all the cobbled sectors, the five-star difficulty rating, the dust and the mechanicals. Jessica Hopkins, New York Times, 10 Apr. 2026 On the live broadcast, NASA commentator Derrol Nail started with the countdown to liftoff. Lauren Linder, CBS News, 10 Apr. 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 15 Apr. 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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