Etymology

dehydroretinol

D2E1H4Y4D2R1O1R1E1T1I1N1O1L1

Today it means: A derivative of retinol having an extra double bond; vitamin A2. Full definition →

English retinol ← Latin dē- ← Proto-Italic *dē
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The story

  1. Proto-Indo-European*de
  2. Proto-Indo-European*déh₁
  3. Proto-Italic*dē
  4. Latindē
  5. Latindē-
  6. Englishde-
  7. Englishhydro-
  8. Englishretinol
  9. English todaydehydroretinol

From de- + hydro- + retinol.

Etymology from Wiktionary, CC BY-SA 4.0.