Imperatrix, pen prod. tricis, Verbale. f. g. The chiese gonernesse: the empresse.Imperatrix Italia. Plinius. Italy lady and gonernesse of the world.Imperatorius. Adiect. Belonging to an Empero or great captaine, vt Imperatoria donatio. Cic.Imperatorius labor. Ci. The laboure and trauaile a captaine taketh.Imperatoria laus.Cic. Imperatorium ius. Cic.
Lewis and Short: Latin dictionary
impĕrātrix (inp-), īcis, f. [imperator], she who commands, a mistress (very rare): deinde fortes viros ab imperatrice (i. e. Clodia) in insidiis locatos, Cic. Cael. 28, 67: Italia, Plin. 26, 3, 8, 16 (dub.; creatrice, Jan.): ut esset animae tam quam imperatrici suae caro subditiva, Ambros. de Inst. Virg. 2, 11: imperatrix et Augusta Pulcheria, Leo. M. Ep. 101, 3; 98, 3.