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
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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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