SEPTUAGENARIAN
Meaning of SEPTUAGENARIAN in English
n. & adj.
n. a person from 70 to 79 years old.
adj. of this age.
[ L septuagenarius f. septuageni distributive of septuaginta seventy ]
Concise Oxford English dictionary.
Краткий оксфордский словарь английского языка.
2012