I. She that originates a thing, an author (very rare, and post-class. for auctor, q. v. fin.): “materia auctrix universitatis,” Tert. adv. Herm. 5: “anima auctrix operum carnis,” id. adv. Marc. 5, 10: “comoediae scelerum et libidinum auctrices,” id. Spect. 18.—
II. A female seller or surety (very rare, and post-class.), Cod. Diocl. et Max. 8, 45, 16; Tert. Anim. 57.