† pregˈnatressObs.rare—1. [f. as fem. of L. *pregnātor (not found) + -ess1.] A (feminine) agent or power that generates or brings to birth. 1765Law tr.Behmen's Myst. Magnum vi. (1772) 26 For the Pregnatress [Ger.Gebährerin] of Time is a Model or Plat-form of the Eternal Pregnatress.