radioactivity

About 2.67 uses per million words.

Meaning

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

Similar words

activity radiation radiological radionuclide radioactive dose label contamination gross radioactive decay

Often followed by

in of was is and from to by into

Word family

radioactivities