S / septŭāgēsimus
adjective

septŭāgēsimus

fem. septŭāgēsima · neut. septŭāgēsimum
the seventieth
num. ord. adj. [septuaginta], the seventieth: ad annum, Cic. Div. 1, 23, 46: castra, Liv. 28, 16.