rĕdemptūra — Lewis & Short
rĕdemptūra, ae, f.redimo,
I an undertaking of public deliverings by contract, a contracting, farming (very rare):
qui redempturis auxissent patrimonia,Liv. 23, 48 fin.:
redempturis faciendis,Dig. 14, 3, 5; cf. Becker, Antiq. 2, 1, p. 270, and 3, 2, p. 217.