Noun: septuagenarian ,sep-tyoo-u-ju'neh-ree-un
- Someone whose age is in the seventies
"The septuagenarian celebrated her 75th birthday with a skydiving adventure"
Derived forms: septuagenarians
Type of: golden ager [N. Amer, informal], old person, oldster [N. Amer, informal], senior citizen
Encyclopedia: Septuagenarian