IPA: /sɛnˈtɛnəri/
KK: /sɛnˈtɛnəri/
Relating to a period of one hundred years or an event that happens every hundred years.
The centenary celebration of the town will include various events and activities.
A period of 100 years, often used to mark anniversaries or significant events.
The town celebrated its centenary with a big festival.
Centenary → It is formed from "cent" (from Latin "centum", meaning one hundred) and "-ary" (meaning relating to or connected with). The word "centenary" refers to something that is related to or commemorates a period of one hundred years.
Think of 'cent' meaning one hundred, and '-ary' indicating a relation — so centenary is about something that relates to a hundred years.