1. quinquagenarius — de Vaan
quinquagenarius 'containing fifty of anything' (Cato+), quinquagesies 'fifty times' (PL), qumgend 'five hundred' (PL+); quinquatrus, -uum [f-pL] 'festival of Minerva, lasting five days in March' (PL+), quinquertid 'one who competes in the pentathlon' (Andr.); quim 'five at a time' (PL+), quvnarius 'containing five each; coin worth five asses9 (Varro+), quJnavicenarius 'relating to twenty-five' (PL), quincunx, -ncis … — [de Vaan, s.v. quinquagenarius, p. 523]