Impact
The strong and noticeable effect or influence on something or someone. In the context with CBRN often used to describe the effect of a CBRN release.
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