termination

https://doi.org/10.1351/goldbook.T06274
The steps in a @C00960@ in which reactive @I03096@ are destroyed or rendered inactive, thus ending the chain.
Source:
PAC, 1994, 66, 1077. (Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)) on page 1173 [Terms] [Paper]