IPA: //ˌbaɪsɛnˈtɛnəri//
KK: /bɪˈsɛnəˌri/
A bicentenary is a celebration or event that marks the 200th anniversary of a significant occurrence.
The town held a festival to celebrate its bicentenary this year.
Bicentenary → It is formed from "bi-" (meaning two) and "centenary" (from Latin "centenarius", meaning a hundred). The word refers to the celebration or occurrence of an event that happens every two hundred years.
Think of 'bi-' meaning two and 'centenary' relating to a hundred — so bicentenary is about something that happens every two hundred years.