gĕnĕrātrix, īcis, f. [generator],
she that generates or brings forth : (Aegyptus) hominum aliorumque animalium perfecunda generatrix, Mel. 1, 9, 1; Ambros. de Noë, 28, 106.
·noun That which generates; the point, or the mathematical magnitude, which, by its motion, generate...
Webster's Dictionary of the English Language