defining moment

noun

: the time that shows very clearly what something is really about
That was the campaign's defining moment.

Examples of defining moment 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.
Now in its 152nd year, the Kentucky Derby is the longest continuously held sporting event in North America and a defining moment on the American social calendar. Julia Zaltzman, Robb Report, 30 Apr. 2026 Admiral Kevin Lunday, commandant of the Coast Guard, said the discovery reconnects the service to a defining moment in its history. Anthony Thompson, USA Today, 30 Apr. 2026 The Battle of Copenhagen is a defining moment in Danish history, and played a part in shaping the nation's identity — making the excavation especially significant for the country. Andrea Margolis, FOXNews.com, 29 Apr. 2026 The defining moment of San Francisco getting mixed up with Cincinnati was when left-hander Erik Miller struck out rookie Sal Stewart to end last Thursday’s game, then subsequently ignited a benches-clearing brouhaha. Justice Delos Santos, Mercury News, 24 Apr. 2026 See All Example Sentences for defining moment

Browse Nearby Words

Cite this Entry

“Defining moment.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/defining%20moment. Accessed 3 May. 2026.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster