ra·di·o·ge·nic 
(rā′dē-ō-jĕnĭk)
(rā′dē-ō-jĕnĭk)adj.
Relating to or caused by radioactivity.
- precessional
- precession of the equinoxes
- pre-Christian
- precinct
- preciosity
- precious
- preciously
- precious metal
- preciousness
- precious stone
- precipice
- precipitable
- precipitance
- precipitancy
- precipitant
- precipitantly
- precipitate
- precipitately
- precipitateness
- precipitation
- precipitative
- precipitator
- precipitin
- precipitinogen
- precipitous