radi-

combining form
variants: or radio-

Definition of radi-

1 :radiant energy :radiation
  • radioactive
  • radiopaque
2 :radioactive
  • radioelement
3 :radium :X-rays
  • radiotherapy
4 :radioactive isotopes especially as produced artificially
  • radiocarbon
5 :radio
  • radiotelegraphy
6 :radius bone
  • radio-ulna

Origin and Etymology of radi-

French, from Latin radius ray


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