O / ŏpĕrātrix
noun

ŏpĕrātrix

gen. ŏpĕrātrīcis · gender feminine · decl. 3rd
she that works; a worker; effecter
she that works, a worker, effecter, producer (eccl. Lat.): vis operatrix, Tert. Anim. 11: mortis, id. ib. 52: sapientia, creative wisdom, Ambros. Spir. Sanc. 2, 9, § 92.