This would correspond, psychologically, to the analytic lysis or dissolution of the ego’s barren standpoint.
Edinger directly identifies ‘analytic lysis’ with the alchemical solutio, defining it as the therapeutic dissolution of a sterile ego-position that must occur before psychic transformation can proceed.
, The Mysterium Lectures: A Journey Through C.G. Jung’s Mysterium Coniunctionis, 1995thesis