noun. an electromagnetic dispersion of brief wavelengths generated by bombarding a heavy metal objective with high-energy electrons in a vacuum tube. X-rays are utilized for diagnostic reasons to see interior body anatomy: The radiation can infiltrate most compounds and generate pictures of items on photographic films or can elicit specific chemicals to fluoresce. X-rays are additionally utilized therapeutically to kill malignant cells. Commonly referred to as roentgen ray.
X-RAY: "X-rays are often used to take pictures of broken bones. "