from The Century Dictionary and Cyclopedia
- n. A mother.
Sorry, no etymologies found.
In which definition, three several operations are specified — altrix, auctrix, procreatrix; the first is  nutrition, whose object is nourishment, meat, drink, and the like; his organ the liver in sensible creatures; in plants, the root or sap.
From infancy to maturity he had resembled his maternal procreatrix.