Alchemy

noun 1. the way two individuals relate to each other; 'their chemistry was wrong from the beginning -- they hated each other'; 'a mysterious alchemy brought them together'

noun 2. a pseudoscientific forerunner of chemistry in medieval times

The premodern and early modern study of physical changes, particularly in Europe, Arabia, and China; and chiefly in pursuit of an elixir of immortality, a universal panacea, and/or a philosopher's stone able to transmute base metals into gold, eventually developing into chemistry.; The causing of any sort of mysterious sudden transmutation.

Etymology: From Old French alkimie, arquemie (French alchimie), from Medieval Latin alchēmia, from Arabic اَلْكِيمِيَاء (al-kīmiyāʔ), from Ancient Greek χυμείᾱ (khumeíā, “art of alloying metals”), from χύμα (khúma, “ingot, bar”). Compare Spanish alquimia and Italian alchimia.