The branch of physics concerned with the properties and applications of ionizing radiation, especially in connection with diagnostic and therapeutic radiology; radiation physics.
Origin
Early 20th century; earliest use found in Kingston (New York) Daily Freeman. From radio- + physics.
radiophysics2
/ˌreɪdɪəʊˈfɪzɪks/
noun
The branch of physics concerned with the properties and applications of radio waves.
Origin
1920s. From radio- + physics. Compare earlier radiophysical, radiophysicist.