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

This year, the Atlanta History Center is celebrating its centennial — and America’s 250th birthday — with an ambitious slate of happenings. —Danielle Charbonneau, AJC.com, 20 Jan. 2026

Throughout 2025, museums and fashion brands alike celebrated the centennial of the Art Deco movement from museum installations and exhibits to fashion collections and more. —Julia Teti, Footwear News, 20 Jan. 2026

Game day energy spills into the city at the National WWI Museum and Memorial, celebrating its own centennial in 2026 while anchoring the city’s free FIFA Fan Festival. —Taryn Shorr-McKee, Midwest Living, 11 Jan. 2026

In 2026, Seligman will host a centennial party to celebrate the establishment of the famous road. —Daria Bachmann, Travel + Leisure, 11 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