Reversible-deactivation radical polymerization mediated by transition-metal complexes or organometallic compounds.
See: organometallic-mediated radical polymerization, atom-transfer radical polymerization
Source:
PAC, 2022, 94, 1093. 'Terminology for chain polymerization (IUPAC Recommendations 2021)' on page 1111 (https://doi.org/10.1515/pac-2020-1211)