radioactivity
ray dee ohak ti vuh tee
- n the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay
- Should the level of radioactivity rise markedly, babies could be kept on processed food longer to avoid radiation; milk and other vulnerable foods could be kept in freezers for a .
- What to look for is uranium's radioactivity.
- Large populated areas surrounding the reactor site in the Ukraine and in nearby Belorussia remain contaminated with high levels of radioactivity.