X-ray

A type of high-energy radiation. In low doses, x-rays are used to diagnose diseases by making pictures of the inside of the body. In high doses, x-rays are used to treat cancer.

(x'-ra) electromagnetic vibrations of short wavelengths that are produced when electrons moving at high velocity impinge on various substances. These qualities make it possible to use them in taking radiographs of various parts of the body, thus revealing the presence and position of fractures or foreign bodies or etc.