Containment (confinement)
Process by which possible release, discharge or spill of a toxic substance or the spread of an infectious agent during normal use or after an accident is prevented by appropriate action
Glossary Source
JRC EU CBRNe Glossary
(
EU Glossary on Chemical, Biological, Radiological, Nuclear, and Explosive risks
)
https://publications.jrc.ec.europa.eu/repository/bitstream/JRC128863/JRC128863_01.pdf