English Reference

Word

centenary

Phoneticscen·te·nary

US/ˈsɛntəˌnɛɹi/

UK/sɛntˈiːnəɹi/

Definitions

01hundredth anniversary

B2

n. the day or year that is exactly 100 years after a major event.

n. the hundredth anniversary of a significant event, or the celebration held to mark it.

“The city held a massive parade to celebrate the centenary of its founding.”

“The university is planning a series of high-profile lectures and exhibitions to mark the centenary of the discovery of the vaccine.”

British English

Usage

In British English, 'centenary' is the standard term, whereas American English almost exclusively uses 'centennial'.

Teaching tip

Learners should be aware that while both words are correct, 'centenary' sounds more formal or traditional to American ears.

02relating to 100 years

C1

adj. happening every 100 years or relating to a 100th anniversary.

adj. pertaining to a period of one hundred years or a hundredth anniversary.

“The centenary celebrations lasted for an entire week in the town square.”

“The committee published a centenary volume documenting the architectural changes in the district over the last ten decades.”

British English · Formal

Usage

Usually placed before a noun.

Teaching tip

This adjective form is less common than the noun; it is typically found in official titles or formal event descriptions.

Synonyms

Real-World Examples

“In April, Ryder Cup organisers defended ticket prices for next year's centenary golf event between Europe and the United States in Ireland.”
BBC News · 3 Sept 2026
“But a home game against newly-promoted Frosinone seemed a perfect opportunity for new faces to establish themselves while marking the club’s centenary in style.”
The Guardian · 31 Aug 2026

Word family

Related words

This entry

Level
B2 · Upper Intermediate
Frequency
Frequent
Updated

Scan code

englishreference.com/q/centenary

English Reference