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

Words are always getting conventionalized to some secondary meaning. It is one of the works of poetry to take the truants in custody and bring them back to their right senses.
William Butler Yeats