x-ray therapy(n = noun.act) - the therapeutic use of X rays;
is a kind of actinotherapy, irradiation, radiation, radiation therapy, radiotherapy

autogenic therapy, aversion therapy, behavior therapy, client-centered therapy, electroconvulsive therapy, electroshock therapy, encounter therapy, exposure therapy, family therapy, group therapy, herbal therapy, highly active antiretroviral therapy, hormone replacement therapy, hormone-replacement therapy, implosion therapy, inflation therapy, infrared therapy, insulin shock therapy, megavitamin therapy, metrazol shock therapy, occupational therapy, physical therapy, play therapy, radiation therapy, radium therapy, reciprocal-inhibition therapy, shock therapy, speech therapy, therapy, thrombolytic therapy, x-ray, x-ray astronomy, x-ray diffraction, x-ray film, x-ray machine, x-ray photograph, x-ray photography, x-ray picture, x-ray tube