radioactive[rā′dē ō ak′tiv]
The definition of radioactive is something that gives off energy waves called radiation.
Naturally Occurring Radioactive Elements
- Uranium (238)
- Uranium (235)
Radioactive Elements Used for Science
- Cobalt (60)
- Iron (55)
- Sodium (22)
- Cobalt (57)
- Iodine (125)
- Iron (59)
- Iodine (131)
- Sodium (24)
Radioactive Elements for Energy and Bombs
- Plutonium (238)
An example of radioactive is the element Plutonium which is used for nuclear bombs.
Uranium is radioactive.
Origin of radioactiveradio- + active
- Of, exhibiting, or caused by radioactivity.
- Informal Extremely sensitive or controversial: “Perhaps race is now too radioactive a topic, in an era of political correctness” (David Nyhan).
- Exhibiting radioactivity.