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.
radioactive definition by Webster's New World
Origin: radio- plush active
radioactive definition by American Heritage Dictionary
- 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).
- raˌdi·o·acˈtive·ly adverb
radioactive - Cultural Definition
A descriptive term for a material made up of atoms in which radioactivity occurs.
radioactive - Medical Definition