septuagenary

[ sep-choo-aj-uh-ner-ee, -too-, -tyoo- or, esp. British, -choo-uh-jee-nuh-ree ]
/ ˌsɛp tʃuˈædʒ əˌnɛr i, -tu-, -tyu- or, esp. British, -tʃu əˈdʒi nə ri /
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adjective, noun, plural sep·tu·ag·e·nar·ies.

Origin of septuagenary

1595–1605; < Latin septuāgēnārius, equivalent to septuāgēn(ī) seventy each (distributive of septuāgintā seventy) + -ārius -ary
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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