Etymology

radiopaque

ra·di·o·paque
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Today it means: Impenetrable to X-rays and other radiation. Full definition →

English opaque ← Middle French opaqueinflu. ← Middle English opake
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The story

  1. Latinradius
  2. Englishradi-
  3. Latinopacus
  4. Middle Englishopake
  5. Middle Frenchopaqueinflu.
  6. Englishopaque
  7. English todayradiopaque

From radi- (staff) + opaque. First attested in 1917.

Etymology from Wiktionary, CC BY-SA 4.0.