The word "酵素" is formed by combining the character "酵", which itself incorporates the radical "酉" indicating fermentation or alcohol-related processes and the component "孝" suggesting its pronunciation, with the character "素", meaning element or basic substance. Together, "酵" conveys fermentation or biochemical catalysis and "素" denotes a fundamental material, resulting in a compound that directly signifies enzymes as substances essential for such reactions.