[{"Bold_text": "noun", "List Items": ["Physics.Oftenx-rays.a form of electromagnetic radiation electromagnetic radiation,similar to light but of shorter wavelength and capable of penetrating solids and of ionizing gases.such radiation having wavelengths in the range of approximately 0.1–10 nanometers.", "Oftenx-rays.a form of electromagnetic radiation electromagnetic radiation,similar to light but of shorter wavelength and capable of penetrating solids and of ionizing gases.", "such radiation having wavelengths in the range of approximately 0.1–10 nanometers.", "a radiograph made by x-rays.", "(initial capital letter)a word in communications to represent the letter X."]}, {"Bold_text": "verb (used with object)", "List Items": ["to examine, photograph, or treat with x-rays."]}, {"Bold_text": "adjective", "List Items": ["of or relating to x-rays:x-ray examination of the digestive tract.", "able to see through objects that are opaque:the x-ray vision of Superman and other superheroes.", "able to clearly and keenly perceive or recognize something that is not outwardly visible:a teacher with x-ray intuition about her students."]}]