supercentenarian

noun2

1. •
   A person that is at least 110 years old.

   • A rare supercentenarian, he remained remarkably lucid after 11 decades, even maintaining a blog. His brain has been donated for research on what’s known as super-aging. — 2024
2. •
   (old-fashioned) Synonym of centenarian: a person that is at least 100 years old, especially someone well over age 100.