1. Electromagnetic radiation of short wavelength produced when high-speed electrons strike a solid target
   - X ray, X-ray, X-radiation

Derived forms: roentgen rays

Type of: electromagnetic radiation, electromagnetic wave, ionizing radiation, nonparticulate radiation

Encyclopedia: Roentgen ray

• respiratory disorder
• respiratory distress syndrome
• respiratory distress syndrome of the newborn
• respiratory illness
• respiratory infection
• respiratory organ
• respiratory quotient
• respiratory rate
• respiratory syncytial virus
• respiratory system
• respiratory tract
• respiratory tract infection
• respire
• respirometer
• respite
• resplend
• resplendence
• resplendency
• resplendent
• resplendent quetzel
• resplendent trogon
• resplendently
• respond
• respondent
• responder