radioactivity
ra-di-o-ac-tiv-i-ty
noun
The emission of ionising radiation by unstable atomic nuclei.
"Scientists measured the radioactivity levels near the old power plant."
Thesaurus
Synonyms: radiation
ra-di-o-ac-tiv-i-ty
The emission of ionising radiation by unstable atomic nuclei.
"Scientists measured the radioactivity levels near the old power plant."
Synonyms: radiation