Dictionary.net

stäl'i-an-izm, n. the doctrines of Georg Ernst Stahl, a German physician (1660-1734), who held that there exists a mysterious force residing in, but independent of, matter, not only forming the body, but directing it in all its functions--also STAHL'ISM.--adj. STAHL'IAN.

The doctrine of Stahl, which considered every vital action under the direction and presidency of the soul. See Animist.