Definition of X-ay

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.
(Colloquial) A photograph made with X-rays. The proper term for this is "radiograph."
"The doctor ordered some X-rays of my injured wrist."
An X-ray machine.
The letter X in the ICAO spelling alphabet.
(Colloquial) To expose film with X-ray radiation, especially for the purpose of medical diagnostic evaluation. Properly, the way to express this is "take a radiograph of".
Of course there was nothing wrong with my left wrist. They X-rayed the wrong arm!"
Of or having to do with x-rays.
I had to put my bags through an X-ray scanner at the airport.

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