This dictionary documents alchemical symbolism from the early centuries AD to the late-twentieth century, for use by historians of literary culture, philosophy, science and the visual arts, and readers interested in alchemy and hermeticism. Each entry includes a definition of the symbol, giving the literal (physical) and figurative (spiritual) meanings, an example of the symbol used in alchemical writing, and a quotation from a literary source. There are fifty visual images of graphic woodcuts, copperplate engravings and hand-painted emblems, some reproduced here for the first time.