supercentenarian

noun

Etymology: From super- (“beyond, more than”) + centenarian (“100-year old”), q.v.

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

   “On the other hand, we sometimes have occasion to observe the advent of the changes referred to delayed, and men arrive at the period of eighty, ninety, or a hundred years, or become, indeed, super-centenarians, without exhibiting those characterizing features to which, in their totality, we apply, as I have said, the term "age".”

   “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.”

2. Synonym of centenarian: a person that is at least 100 years old, especially someone well over age 100.