adjective
- pertaining to or having lived 100 years.
noun
- a person who has reached the age of 100.
noun
- a person who is at least 100 years old
adjective
- being at least 100 years old
- of or relating to a centenarian
1805, “person 100 years old,” from centenary + -ian. As an adjective, “pertaining to a person 100 years old,” recorded from 1806.