https://doi.org/10.1351/goldbook.08153
Sequence of reaction steps in the form of a loop. One step is binding of a reactant to the active catalyst (sometimes formed from a precatalyst), and another step is the release of product and regeneration of the catalyst.
Example: \(\ce{A + B -> C}\), catalyzed by \(\ce{X}\) formed from precatalyst \(\ce{X'}\).