<p><strong>Noun</strong></p><ul><li>a form of chemistry and speculative philosophy practiced in the Middle Ages and the Renaissance and concerned principally with discovering methods for transmuting baser metals into gold and with finding a universal solvent and an elixir of life.</li><li>any magical power or process of transmuting a common substance, usually of little value, into a substance of great value.</li><li>any seemingly magical process of transforming or combining elements into something new: Through some kind of alchemy he has reinvented himself as a writer.</li></ul>