https://doi.org/10.1351/goldbook.I03034
The decrease in rate of reaction brought about by the addition of a substance inhibitor), by virtue of its effect on the concentration of a reactant, catalyst or reaction intermediate. For example, molecular oxygen and p-benzoquinone can react as 'inhibitors' in many reactions involving radicals as intermediates by virtue of their ability to act as scavengers toward these radicals. If the rate of a reaction in the absence of inhibitor is and that in the presence of a certain amount of inhibitor is , the degree of inhibition ( ) is given by:
See also: mechanism-based inhibition