x-rays

/EH1 K S R EY0 Z/

noun

1
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.”
2
A radiograph: a photograph made with X-rays.
“"The doctor ordered some X-rays of my injured wrist."”
3
An X-ray machine.
4
The letter X in the ICAO spelling alphabet.

Synonyms

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