Enzyme

Previously, living catalysts were called ferments. Kuhne suggested that non-living substances that act as biological catalysts be called enzymes. Eventually the name enzyme came to be applied to living and non-living biological catalysts.
 Wilhelm Friedrich Kühne Germany 1878 Enzyme

Previously, living catalysts were called ferments. Kuhne suggested that non-living substances that act as biological catalysts be called enzymes. Eventually the name enzyme came to be applied to living and non-living biological catalysts.