Associations to the word «Radioactivity»

Wiktionary

RADIOACTIVITY, noun. Spontaneous emission of ionizing radiation as a consequence of a nuclear reaction, or directly from the breakdown of an unstable nucleus.
RADIOACTIVITY, noun. The radiation so emitted; including gamma rays, alpha particles, neutrons, electrons, positrons, etc.

Dictionary definition

RADIOACTIVITY, noun. The spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay.

Wise words

Suit the action to the word, the word to the action.
William Shakespeare