centennial

noun

cen·​ten·​ni·​al sen-ˈte-nē-əl 

: a 100th anniversary or its celebration

centennial adjective

centennially

sen-ˈte-nē-ə-lē 

adverb

Examples of centennial in a Sentence

Recent Examples on the Web

The Rangers celebrated their 1994 championship team before the game as part of the franchise's centennial celebration. —CBS News, 27 Jan. 2026

Springfield is also recognized as the birthplace of Route 66, which is celebrating its centennial year in 2026 and whose stretch in Arizona was named one of Newsweek's top places to travel in 2026. —Michael Salerno, AZCentral.com, 27 Jan. 2026

Italy’s Torino Film Festival is set to celebrate the centennial of Marilyn Monroe’s birth with an extensive retrospective comprising 24 films featuring the Golden age of Hollywood icon. —Nick Vivarelli, Variety, 27 Jan. 2026

Neatly coinciding with America’s 250th anniversary, the AHC has a slate of exciting new exhibits to mark its centennial. —Aj Willingham, AJC.com, 23 Jan. 2026

Word History

Etymology

Latin centum + English -ennial (as in biennial)

First Known Use

1791, in the meaning defined above

Rhymes for centennial

• biennial
• decennial
• millennial
• perennial
• quadrennial
• quinquennial
• triennial
• bicentennial
• sesquicentennial

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