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 other half argued for Route 66, which celebrates its centennial this year with events along the entire route. — Stacey Leasca, Travel + Leisure, 29 June 2026

But for those looking to mark Brooks' centennial with a marathon, here's a list of the five absolutely essential comedies that define the legend. — Rance Collins, Entertainment Weekly, 28 June 2026

The Fray and Daughtry and country artists Easton Corbin and Justin Moore are among the performers still scheduled to play at the festival, which is celebrating its centennial this year. — Nick Lentz, CBS News, 28 June 2026

News of the rout was not widely disseminated for more than a week and shook the confidence of a country celebrating its centennial. — New York Times, 28 June 2026

Word History

Etymology

Latin centum + English -ennial (as in biennial)

First Known Use

1791, in the meaning defined above

Rhymes for centennial

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