centenarian
🇺🇸
/ˌsentɪˈneriən/
🇬🇧
/ˌsentɪˈneəriən/
A person who has lived for 100 years or more.
The centenarian celebrated her 102nd birthday with her family.
这位百岁老人与家人一起庆祝了她102岁的生日。