Catalyses – ca⋅tal⋅y⋅sis /kəˈtæləsɪs/ [kuh-tal-uh-sis] –noun, plural -ses /-ˌsiz/ [-seez]
1. Chemistry. the causing or accelerating of a chemical change by the addition of a catalyst.
2. an action between two or more persons or forces, initiated by an agent that itself remains unaffected by the action: e.g., social catalyses occasioned by controversial writings