septuagenarius
From LSJ
Latin > English (Lewis & Short)
septŭāgēnārĭus: a, um, adj. septuageni,
I of or belonging to the number seventy, containing seventy, septuagenarian: fistula, seventy quarter-digits broad, Front. Aquaed. 56: homo, a man of seventy, a septuagenarian, Dig. 50, 6, 5, § 7.
Latin > French (Gaffiot 2016)
septŭāgēnārĭus, a, um, qui contient soixante-dix : septuagenaria fistula Frontin. Aqu. 56, tuyau qui a soixante-dix pouces de diamètre || septuagénaire : Dig. 50, 6, 5.