combining form
Etymology: French, from Latin radius ray — more at ray
1.
a. : radial : radially
radio symmetrical
radio litic
b. : radial and
radio bicipital
2.
a. : radiant energy : radiation
radio active
radio dermatitis
b. : radioactive
radio element
c. : radium : X rays
radio therapy
d. : radioactive isotope especially as produced artificially
radio carbon
e. : radio
radio telegraphy
radio photograph