radioactive /ˌreɪdijoʊˈæktɪv/ adjective /ˌreɪdijoʊˈæktɪv/
adjective
Learner's definition of RADIOACTIVE
[more radioactive; most radioactive]
: having or producing a powerful and dangerous form of energy (called radiation)放射性的；有辐射的 — radioactivity
/ˌreɪdijowækˈtɪvəti/ noun [noncount]