| airborne radioactivity | <radiobiology> Radioactivity in any chemical or physical form that is dissolved, mixed, suspended or otherwise entrained in air. (16 Dec 1997) |
|---|---|
| radioactivity | <radiobiology> The quality of emitting or the emission of corpuscular or electromagnetic radiations consequent to nuclear disintegration, a natural property of all chemical elements of atomic number above 83 and possible of induction in all other known elements. (18 Nov 1997) |
| induced radioactivity | artificial radioactivity |
| unit of radioactivity | See: Becquerel. (05 Mar 2000) |