The reduction in rate due to reduction or loss of activity of a @C00876@ caused by @A00155@ of poison which is not greatly preferred to adsorption of reactant.
Source: PAC, 1976, 46, 71. (Manual of Symbols and Terminology for Physicochemical Quantities and Units - Appendix II. Definitions, Terminology and Symbols in Colloid and Surface Chemistry. Part II: Heterogeneous Catalysis) on page 83 [Terms] [Paper]