Radioactive material
Material containing radioactive isotopes that give off radiation as they decay.
A report of IAEA defines: “radioactive material shall mean any material having a specific activity greater than 70 Becquerel/kg“.
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