Chest film (specific to chest X-rays), bone scan, and ct scan (related, but more advanced) are all synonyms for x-ray. Opaque and solid are antonyms of x-ray. And here are 31 another word for X-ray.
Bone scan, ct scan (related, but more advanced), chest film (specific to chest x-rays), dental x-ray, diagnostic imaging, diagnostic radiograph, diagnostic tool, electromagnetic radiation, fluoroscopy, hard x-ray (specific to physics), imaging technique, imaging, medical imaging, projectional radiography, radiation scan, radiograph, radiographic image, radiographic scan, radiology, roentgen ray, scan, skeletal imaging, soft x-ray (specific to physics), x-ray beam, x-ray fluorescence, x-ray image, x-ray photograph, x-ray scan, x-ray test, and radiant energy imaging are all synonyms for X-ray.
X-ray synonym page has a variety of synonyms that differ in length. 1 synonym with 4, 7, 13, 15, 20, 23, 24, 28, and 29 letters and 4 synonyms with 8 letters. 2 synonyms with 9, 10, 11, 17, and 25 letters and 3 synonyms with 14, and 16 letters. For a total of 29 another word for x-ray.