centennial

noun

cen·​ten·​ni·​al sen-ˈte-nē-əl How to pronounce centennial (audio)
: a 100th anniversary or its celebration
centennial adjective
centennially adverb

Examples of centennial 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.
Decked out in matching Route 66 button-up shirts that featured a map of the iconic road, the married couple set out on a road trip to celebrate the centennial. Audrey Pachuta, Chicago Tribune, 1 May 2026 The baseball field at the prison hasn't been touched since the building closed down in 2002, but the exhibition game is part of the centennial celebration of Route 66. Jackie Kostek, CBS News, 30 Apr. 2026 Doocy’s trip will conclude in Springfield, Missouri, where the official kickoff of the Route 66 centennial celebration is set to take place. Kelly McGreal, FOXNews.com, 29 Apr. 2026 As part of its centennial celebration of the iconic dish, The Brown Hotel is embracing this spirit of innovation by introducing a number of hot brown variations, including a dip, quesadilla, wontons, and poutine-like fries loaded with turkey, bacon, and mornay sauce. Rich Warren, Saveur, 29 Apr. 2026 See All Example Sentences for centennial

Word History

Etymology

Latin centum + English -ennial (as in biennial)

First Known Use

1791, in the meaning defined above

Time Traveler
The first known use of centennial was in 1791

Browse Nearby Words

Cite this Entry

“Centennial.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/centennial. Accessed 2 May. 2026.

Kids Definition

centennial

1 of 2 noun
cen·​ten·​ni·​al
sen-ˈten-ē-əl
: a 100th anniversary or its celebration

centennial

2 of 2 adjective
: relating to a period of 100 years
centennially
-ē-ə-lē
adverb

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