Lewis & Short

rĕdemptrix, īcis, f. [redemptor, II.], she that redeems, a redemptress, Prud. στεφ. 10, 77, 3; Coripp. Laud. Just. 4, 297; Am. bros. de Caïn et Abel, 2, 4, 13; id. de Vid. 6, 36.