noun Etymology: Late Latin septuagenarius seventy years old, from Latin, of or containing seventy, from septuageni seventy each, from septuaginta Date: 1805 a person whose age is in the seventies, ~ adjective
SEPTUAGENARIAN
Meaning of SEPTUAGENARIAN in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012