x-ray

Short wavelength electromagnetic radiation usually produced by bombarding a metal target in a vacuum. Used to create images of the internal structure of objects; this is possible because X-rays pass through most objects and can expose photographic film.

“X-rays are light with a wavelength between 0.1 and 10 nm.”

A radiograph: a photograph made with X-rays.

“"The doctor ordered some X-rays of my injured wrist."”

An X-ray machine.

The letter X in the ICAO spelling alphabet.

To take a radiograph of; to obtain an image of using X-ray radiation, especially for the purpose of medical diagnostic evaluation.

“Of course there was nothing wrong with my left wrist. They X-rayed the wrong arm!”