initiatrix

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.

ĭnĭtĭātrix, īcis, f. [initiator],

she who originates , a foundress (late Lat.): litteraturae, Tert. ad Nat. 2, 7 med. : virtutum omnium, Salv. de Avarit. 4 post med. p. 165 Rittersh.