Scrabble & Words with friends points
- radioactivity is a valid Scrabble US word with a point value of 22
- radioactivity is a valid Scrabble UK word with a point value of 22
- radioactivity is a valid Words with friends word with a point value of 23
Definition of radioactivity
- the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay (noun)
Synonyms
- radiation
See definition of radioactivity in Merriam Webster