A 100-year old person is called a centenarian.
nonagenarians, and 100 year olds are centenarians.
septuagenarian
Old
Centenarian.
A person who is 100 years old is commonly referred to as a centenarian.
A 70-year-old individual is commonly referred to as a septuagenarian.
A "septuagenarian" is a person who is 70 through 79 years old.
hexagenarian
A one-hundred-year-old person can be called a Centenarian.
same size as a 99 year old
forty five year old person