Etymology Explorer › English

Where does “radio-” come from?

radio- (English) comes from Latin radius, from English -án, from Middle English -an.

radio- (English): radiation, radioactive; radio; radius

Definitions

  1. radiation, radioactive; radio; radius

Ancestry of “radio-”, step by step

StepLanguageWordMeaning
1Latinradiusray; staff, rod; spoke
2English-án—
3Middle English-an—

Words derived from “radio-”

  • radio
  • radiant
  • radioactive
  • radiating
  • radiotherapy
  • radiographic
  • radiate
  • radiograph
  • radiator
  • radium
  • radioactivity
  • radiography
  • radiocarbon
  • radiology
  • radiosurgery
  • radiologist
  • radiologic
  • radionuclide
  • radiantly
  • radiometric
  • radiographically
  • radioisotope
  • radiolucent
  • radioulnar
Every word from Middle English -an →