fear of radioactivity or X-rays
Radiophobia is an abnormal fear of ionizing radiation, in particular, fear of X-rays. The term is also used in a non-medical sense to refer to general opposition to the use of nuclear energy. Fear of ionizing radiation is not unnatural, since it can pose significant risks; however this fear may become abnormal and even irrational, often owing to p...
<psychology> Morbid fear of radiation, as from X-rays or nuclear energy. ... Origin: radio-+ G. Phobos, fear ... (05 Mar 2000) ... 
Type: Term Pronunciation: rā′dē-ō-fō′bē-ă Definitions: 1. Morbid fear of radiation, as from x-rays or nuclear energy.
Radiophobia is the fear of radiation, x-rays.
radiophobia An excessive fear of x-rays.