X ray

x-ray also X-ray (ksr)

n. also x ray or X ray

1.

a. A relatively high-energy photon having a wavelength in the approximate range from 0.01 to 10 nanometers.

b. A stream of such photons, used for their penetrating power in radiography, radiology, radiotherapy, and scientific research. Often used in the plural. Also called roentgen ray.

2. A photograph taken with x-rays.

tr.v. x-rayed also X-rayed, x-ray·ing also X-ray·ing, x-rays also X-rays

1. To irradiate with x-rays.

2. To photograph with x-rays.

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[From the fact that it was a previously unknown form of radiation when first discovered.]

Thesaurus

Noun	1.	X ray - electromagnetic radiation of short wavelength produced when high-speed electrons strike a solid target roentgen ray, X-radiation, X-ray ionizing radiation - high-energy radiation capable of producing ionization in substances through which it passes electromagnetic radiation, electromagnetic wave, nonparticulate radiation - radiation consisting of waves of energy associated with electric and magnetic fields resulting from the acceleration of an electric charge
	2.	X ray - a radiogram made by exposing photographic film to X rays; used in medical diagnosis roentgenogram, X-ray photograph, X-ray picture, X-ray angiocardiogram - a series of X rays representing the action of the heart and its blood vessels after the injection of a radiopaque substance angiogram - an X-ray representation of blood vessels made after the injection of a radiopaque substance; "angiograms are produced by angiography" arteriogram - an X ray of an artery filled with a contrast medium arthrogram - an X ray of a joint after the injection of a contrast medium pneumoencephalogram, encephalogram - an X ray of the brain made by replacing spinal fluid with a gas (usually oxygen) to improve contrast hysterosalpingogram - X ray of the uterus and Fallopian tubes; usually done in diagnosing infertility (to see if there any blockages) mammogram - X-ray film of the soft tissue of the breast myelogram - X-ray film of the spinal cord and spinal nerve roots and subarachnoid space pyelogram - an X ray of the kidneys and ureters radiograph, shadowgraph, skiagram, skiagraph, radiogram - a photographic image produced on a radiosensitive surface by radiation other than visible light (especially by X-rays or gamma rays) phlebogram, venogram - an X ray of a vein injected with a radiopaque contrast medium