Etymology

radiotherapy

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Today it means: Synonym of radiation therapy. Full definition →

English therapy ← New Latin therapīa ← Ancient Greek θεραπεία (therapeía)
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The story

  1. Latinradius
  2. Englishradio-
  3. Proto-Indo-European*treb-der.?
  4. Ancient Greekθερᾰ́πων (therắpōn)
  5. Ancient Greekθεραπεύω (therapeúō)
  6. Ancient Greekθεραπεία (therapeía)
  7. New Latintherapīa
  8. Englishtherapy
  9. English todayradiotherapy

From radio- + therapy.

Etymology from Wiktionary, CC BY-SA 4.0.