Dictionary

septuagenarian

noun sep·tu·a·ge·nar·i·an \(ˌ)sep-ˌtü-ə-jə-ˈner-ē-ən, -ˌtyü-, -ˌchü-\

: a person who is between 70 and 79 years old

Full Definition of SEPTUAGENARIAN

:  a person whose age is in the seventies
septuagenarian adjective

Origin of SEPTUAGENARIAN

Late Latin septuagenarius seventy years old, from Latin, of or containing seventy, from septuageni seventy each, from septuaginta
First Known Use: 1805

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