septuagenarius

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.

septŭāgēnārĭus, a, um, adj. [septuageni],

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.