centenarian
🇺🇸
/ˌsentɪˈneriən/
🇬🇧
/ˌsentɪˈneəriən/
A person who has lived for 100 years or more.
The centenarian celebrated her 102nd birthday with her family.
百歳の老人は家族と一緒に102歳の誕生日を祝いました。