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mid-13c., from Medieval Latin elixir "philosopher's stone," believed by alchemists to transmute baser metals into gold and/or to cure diseases and prolong life, from Arabic al-iksir, probably from late Greek xerion "powder for drying wounds," from xeros "dry" (see xerasia). General sense of "strong tonic" is 1590s; used for quack medicines from at least 1630s.
elixir e·lix·ir (ĭ-lĭk'sər)
A sweetened aromatic solution of alcohol and water, serving as a vehicle for medicine.