It is more spam from a pseudoscience site that takes advantage of the plagiarism search engine of the dictionary to put the link for free. See prefix psycho- , alchemy.
Psychoalchemy is a falsehood that meaning only serves to sell smoke. Alchemy does not exist and is science fiction and sounds like a pyramid scam or sect.
Psicoalquimia is the art of transmuting conflicts into opportunities for victory. This definition is more modern than the previous that I gave.
It is art or quality of transforming trauma and psychological negativity in " 34 tools; to evolve. It comes from psyches = soul and Alchemy = art of wonderful and amazing transmutation, and transmute lead into gold.