Moderátrix, pen. prod. moderatrîcis, f. gen. Cic.A gouernesse: a regent.Moderatrix omoium commotionum.Cic.That tempereth and ruleth all passions and affections.Iudex & moderatrix Resp.Cic.Moderatrix rerum sapientia.Cic.
Lewis and Short: Latin dictionary
mŏdĕrātrix, īcis, f. [moderator]. I.She who moderates or allays; a directress, mistress, governess (mostly Ciceron.): sibi, Plaut. Cist. 2, 2, 3.—II.That which rules, guides, controls, etc.: temperantia est moderatrix omnium commotionum, Cic. Tusc. 5, 14, 42: materiae, id. N. D. 3, 39, 92: factorum, id. Phil. 5, 18, 50: officii, id. Fl. 24, 57.