x ray

noun

1. electromagnetic radiation of short wavelength produced when high-speed electrons strike a solid target

   Synonyms

   • X ray, X-ray, X-radiation, roentgen ray

   Less specific

   • electromagnetic radiation, electromagnetic wave, nonparticulate radiation, ionizing radiation

2. a radiogram made by exposing photographic film to X rays; used in medical diagnosis

   Synonyms

   • roentgenogram, X ray, X-ray, X-ray picture, X-ray photograph

   Less specific

   • radiogram, radiograph, shadowgraph, skiagraph, skiagram

   More specific

   • angiocardiogram, angiogram, arteriogram, arthrogram, encephalogram, pneumoencephalogram, hysterosalpingogram, mammogram, myelogram, pyelogram, venogram, phlebogram