Short, direct definitions of core alchemical terms and phrases.
VITRIOL is both a real chemical substance—the alchemists’ name for various metal sulfates, especially sulfuric acid and its salts—and a Latin acronym: Visita Interiora Terrae, Rectificando Invenies Occultum Lapidem, meaning “Visit the interior of the earth; by rectifying, you will find the hidden stone.” The double meaning was entirely deliberate. Alchemists encoded a spiritual instruction … Read more
Quintessence (Latin quinta essentia, “fifth essence”) originally named a supposed fifth element — beyond earth, water, air, and fire — believed by ancient and medieval philosophy to compose the heavens and exist, in trace form, within all earthly matter. In the alchemical and spagyric tradition, it became something far more concrete: the most refined, most … Read more
Prima materia (Latin, “first matter”) is the alchemical term for the raw, undifferentiated substance that remains once a thing has been broken down past its familiar form—the formless starting point every alchemical operation begins from, and the state every “solve” (see Solve et Coagula) is aiming to reach before the work of recombination can begin. … Read more
The Philosopher’s Stone (Latin: lapis philosophorum) was the legendary end product of the Great Work—a substance believed capable of “perfecting” imperfect matter, most famously by transmuting base metals into gold, and in its medical application, of healing and prolonging life. It was never believed to be an actual rock. The word “stone” is a technical … Read more
Solve et coagula is Latin for “dissolve and coagulate” — the two-word operational motto of Western alchemy, describing the cyclical process of breaking a substance down to its raw components (solve) and then recombining those components into something more refined and potent (coagula). It is not merely a slogan or philosophical principle; it is the … Read more
