This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Of, exhibiting, or caused by radioactivity.

adj. Informal Extremely sensitive or controversial: "Perhaps race is now too radioactive a topic, in an era of political correctness” ( David Nyhan).

adj. Exhibiting radioactivity.

adj. Capable of luminescence under the action of cathode rays, X rays, or any of the allied forms of radiation.

adj. of, exhibiting, or caused by radioactivity.

Exhibiting or pertaining to radioactivity (which see): as, radioactive substances.

adj. exhibiting or caused by radioactivity

"NGUYEN: And hence the term radioactive, which you just referred to."

hot   

radioactive tellurium   

radioactivity   

nonradioactive    radioactively   

active    attractive    hyperactive    inactive    interactive    overactive    photorefractive    proactive    reactive    refractive   

toxic    radiological    corrosive    gaseous    residual    volcanic    inorganic    atmospheric    poisonous    atomic