catalyses Hear it!

Variant of catalysis

catalysis Definition

ca·taly·sis (kə tal′ə sis)

noun pl. catalyses -·ses′ (-sēz′)

the speeding up or, sometimes, slowing down of the rate of a chemical reaction caused by the addition of some substance that does not undergo a permanent chemical change

Etymology: ModL < Gr katalysis, dissolution: see cata- & -lysis