- a system of esoteric theosophy and theurgy developed by rabbis, reaching its peak about the 12th and 13th centuries, and influencing certain medieval and Renaissance Christian thinkers. It was based on a mystical method of interpreting Scripture by which initiates claimed to penetrate sacred mysteries. Among its central doctrines are: all creation is an emanation from the Deity and the soul exists from eternity.
- any occult or secret doctrine or science.
- an ancient Jewish mystical tradition based on an esoteric interpretation of the Old Testament
- any secret or occult doctrine or science
