1. the 100th anniversary of a significant event

1. relating to or marking a 100th anniversary

Examples

• The university celebrated its centenary with a grand ceremony.
• This year marks the centenary of the end of World War I.
• The centenary celebration lasted for an entire week.
• They published a special book for the company’s centenary.
• The centenary edition of the magazine featured historical articles.
• A centenary monument was erected in the town square.