Advertisement

radioactivity (n.)

"state of being radioactive; emissions from radioactive material or processes," 1899, from French radioactivité, coined 1898 by the Curies; see radioactive.

Others are reading

Advertisement
Definitions of radioactivity from WordNet

radioactivity (n.)
the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay;
Synonyms: radiation
From wordnet.princeton.edu