The terms for elixir in Late Antiquity, Greek ksērion and Syriac ksīrīn , which were the source of Arabic al-iksīr and and then Latin elixir , denoted, in both medicine and alchemy, an agent for the "healing" of bodies. In medicine the term was used also specifically as a collyrium for the eyes; in alchemy it was, in most cases, a mysterious agent believed to make possible the transformation (transmutation) of imperfect bodies, metals in particular, into noble and immutable bodies (transmutation into "gold" and "silver"). A strong focal point of