Using a radioactive substance / Concerning radioactivity

plural of radioactivity

plural of radioactive

Exhibiting radioactivity. / (figuratively, rare) Dangerous and disgusting, particularly of people or ideas.

Spontaneous emission of ionizing radiation as a consequence of a nuclear reaction, or directly from the breakdown of an unstable nucleus.

Any radioactive substance.

plural of radioactive fallout

The process of determining the age of a material by estimating the amount of radioactive decay of one or more radioisotopes present in the material when it was formed.

material settling from a radioactive plume, and its subsequent surface deposition

(physics, chemistry, medicine) A radioactive isotope which, when injected into a chemically similar substance, or artificially attached to a biological or physical system, can be traced by radiation detection devices.