| a combining form with the meanings “dealing with radiant energy” (radiometer), “employing or dealing with radio waves” (radioacoustics; radiolocation; radiotelephone), “emitting rays as a result of the breakup of atomic nuclei” (radioactive; radiocarbon), “characterized by, employing or dealing with such rays” (radiography; radiopaque; radiotherapy). |
| radio- or radi- pref.
[From radiation.] |
radio- or radi-
pref.
Radiation; radiant energy: radiometer.
Radioactive: radiochemistry.
Radius: radiobicipital.